The best trapezoid blades, compared.
Top pick: Stanley 1992 blades Best value: Tough Master trapezoidal blades – Lowest shelf price here, about £7.36, with the millimetre size in the title and no star line. Updated October 2026.
A trapezoid blade is the two-point spare for a retractable or folding utility knife, the spare many UK shoppers still mean by a knife blade. You buy it because the knife you already own takes that shape. A 9 mm, 18 mm or 25 mm snap-off blade will not seat in it. That other family is the [trapezoid blades or snap-off guide](/hub/diy-supplies/trapezoid-blades/sub/trapezoid-blades-vs-snap-off). A hook blade, a lathe blank or a plastering trowel is a different product. A hook is a pull-cut for carpet, felt and some vinyl. Stanley's catalogue size for the large hook is about 50 mm by 19 mm by 0.65 mm.
A trapezoid blade is the two-point spare for a retractable or folding utility knife, the spare many UK shoppers still mean by a knife blade. You buy it because the knife you already own takes that shape.
22 products checked · 56 hrs invested · +18,600 readers
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Personal buying guide
Question 1 of 2
Which knife is already in the drawer?
Stanley 1992, part 2-11-921, is the two-point reversible trapezoid the bullets describe, with two cutting positions, at about £10.86. The listing shows 4.7 from 10,011 reviews, and the first 50 texts in the extract are labelled United Kingdom and are about these blades. Reviewers including Marcus, Sarra and Richard describe a sharp cut on cardboard, packages and foam board, and several say the blades sat in a Stanley knife or a compatible copy. Daved, JR and others mention a cassette that holds blades, although the bullets themselves do not name a dispenser. The title says regular duty and a pack of 3, the item type says 1992B heavy-duty, and the included-components line says a heavy-duty pack of 10. UK texts mention both 10 and 30, so this page does not settle what the price buys. Ron and David report wobble or a seat that was not exact, and L W Stephens says the edge dulled quickly on carpet tiles.
Pros
Cons
Best for: A Stanley utility knife used on cardboard and general DIY, after you have read the live pack count.
Less suitable: Carpet tiles, a knife that already wobbles with 1992 blades, or a per-blade price sum.
Specifications
Common questions
How many Stanley blades are in this listing?
The title says a pack of 3 and the unit count is 3. The included-components line says a heavy-duty pack of 10. UK reviews mention 10 and 30. The extract does not settle it.
Is it regular duty or heavy duty?
The title says regular duty. The item type name says 1992B knife blades, heavy-duty. Both labels are in the same extract.
What did UK reviewers say about fit?
Several say the blades fit a Stanley knife. Others report a fit that was not exact, wobble, or one end that would not seat.
Milwaukee 48-22-1950 is listed as 50 trimming knife blades at about £10, and this amazon.co.uk extract never uses the word trapezoid. The star line is 4.7 from 1,230, but most of the first 50 UK texts are about locking pliers, grips or a drill, so that figure is not a blade score. The few texts that mention blades split: Adrian Crook, Fred Lilley and Graham West describe a sharp edge and a handy dispenser, while Brian Jama calls the blades very poor and Dariusz Mikos calls them cheap. The bullets state a 50-piece pack and do not name a case, a steel grade or a knife the blades fit. Item weight is given as 4.54 g beside that 50-piece claim, and the length is 3 inches rather than a millimetre size. The shelf price is the lowest here among packs whose count lines agree, which only helps if your knife takes this trimming blade.
Pros
Cons
Best for: A buyer who has already confirmed this trimming blade fits the knife and wants 50 at about £10.
Less suitable: Anyone shopping by the word trapezoid, or anyone reading the 1,230 reviews as blade opinion.
Specifications
Common questions
Does this listing say trapezoid?
No. The item type is trimming knife blades, product style standard. The word trapezoid is not in the extract.
How many blades are listed?
The bullets say a 50-piece bulk pack, and the included components say 50 blades.
Can the 4.7 score be read as a blade score?
The star line is 4.7 from 1,230. Most of the first 50 texts are about locking pliers, grips or a drill. Only a few mention blades.
The Bosch Professional dispenser, part 1600A01V3J, holds 50 trapezoid blades, and the amazon.co.uk bullet says it slides out one blade or five while storing used ones. The listing sits at 4.7 from 598 reviews, and UK texts from Brian W, A C and Daniel Simon talk about that case as much as the edge. Brian W describes a sharp edge that lasted longer than other brands he had used, and Lukasz writes that the blades fitted various knife models. The bullet still limits compatibility to Bosch Professional standard universal knives, so a fit in another brand is one review, not the listing promise. The same page names S2 CVM steel in the bullet and stainless steel in the spec table. Ionut, a UK reviewer, says the pack is not worth the money, and the spec warranty is 24 months while another UK text claims 20 years. At about £15.55 on 15 October 2026, fifty blades is a large stock if you only open the odd parcel.
Pros
Cons
Best for: A Bosch Professional trapezoid knife you use often enough to keep 50 spares, with a slot for used blades.
Less suitable: Occasional parcel opening, or a knife that is not a Bosch Professional standard universal model.
Specifications
Common questions
How many blades are in the Bosch dispenser?
The listing says 50 replacement blades in one dispenser. The unit count is 1.0.
Which knives does the listing say they fit?
The bullet says all Bosch Professional standard universal knives. One UK review says they fitted various knife models. That is a review, not the bullet.
What steel is named?
The bullet says S2 CVM steel. The spec table says stainless steel. Both lines are in the extract.
Tough Master TM-USB10 is the lowest shelf price of the six, about £7.36 on 15 October 2026, and the title prints 19 × 60 × 0.6 mm for a trapezoidal trim-knife blade. A bullet says you flip the blade to use the second point, names SK2 high-carbon steel, and claims a 50-degree cutting angle. The same page says a blister card in the title and a plastic case with a light coat of oil in a bullet, and it says silver in the colour line and a black coating in the material line. It is sold as a pack of 2 of a 10-piece unit, while the included-components line says 1 x utility spare blades, so the count is not safe to divide. There is no star line and no review text. The three-times-more-durable line is only a bullet, and most leading-brand knives is not a model list.
Pros
Cons
Best for: A first spare when you want the millimetre size on the listing and a small outlay.
Less suitable: Anyone who wants UK reviews, a settled pack count, or a tested edge life.
Specifications
Common questions
What size does the Tough Master title give?
19 × 60 × 0.6 mm. The item length line says 60 millimetres.
Card or case?
The title says a blister card. A bullet says a plastic case and a light coat of oil. Both are in the extract.
Is the three-times durability claim tested here?
No. It is a bullet on the listing. The extract has no reviews and no star line.
KS Tools 907.2206 is a pack of 10 trapezoid blades at about £15.94, and the title does not argue with itself about that count. The bullets name SK steel in a storage dispenser, for all standard cutter knives, and they name no knife model. The spec material line says Other beside the SK bullet. The extract gives a weight of 68 g and no length, width or thickness, and it has no star line and no review texts. If ten blades is what arrives, the shelf price is about £1.59 a blade, the dearest split you can make among the counts that agree. The dispenser is the practical reason to look at the row. The missing millimetres are the reason to try one blade in your knife before you treat all standard cutter knives as a promise.
Pros
Cons
Best for: A small dispenser of 10 when you already know your cutter takes a trapezoid blade.
Less suitable: Buyers who want UK reviews, a printed millimetre size, or a low price per blade.
Specifications
Common questions
How many blades are in the KS Tools pack?
The title says a pack of 10.
What does the listing say they fit?
The bullet says for all standard cutter knives. No knife model numbers are in the extract.
Are there reviews?
The extract has no star line and no review texts. Length, width and thickness are also absent.
Bosch Professional part 1600A016ZH is sold as a pack of 2 at about £13.24, and the included line describes 10 replacement blades for each unit in blister packaging. The title says trapezoid blades, a one-hand dispenser and a safety transport box, while the spec table says drop point, folding and a compound bevel. Several bullets describe a rubber handle and a single button, which belong to folding knife 1600A016BL rather than to the spare itself. The extract has no star line and no review texts, so there is no UK opinion here on how long an edge lasts. A bullet claims tool-free blade changes and storage for up to three blades on that knife. You can read the part number, and you cannot read a blade length on this page. Buy it only if you already own 1600A016BL and you have decided which of the two shape lines the listing is selling.
Pros
Cons
Best for: Owners of Bosch folding knife 1600A016BL who want the numbered spare.
Less suitable: A standard retractable utility knife, or anyone who needs the shape lines to agree.
Specifications
Common questions
Does the listing agree on the blade shape?
The title includes trapezoid blades. The spec table says drop point, folding, and a compound bevel. Both are in the extract.
What is in the pack?
The title says a pack of 2. The included-components line says 10 replacement blades for a folding knife, in blister packaging, and a note that the information applies to each unit.
Is there a star rating?
The extract has no customer-review line and no review texts.
For this comparison we scored six amazon.co.uk listings checked on 15 October 2026. Points cover blade-specific reviews, whether the listing lines agree, the kit on the page, and the shelf price when the pack count can be read. A repeated UK complaint, knife-handle bullets on a blade listing, a weight that cannot sit beside the pack, and a card and a case both claimed, reduce the score. There was no laboratory test.
Blade-specific reviews
40%Stars count only when the review texts are about these blades. No star line scores nothing here. Milwaukee's 4.7 from 1,230 is capped because those texts are mostly other tools.
Listing agreement
25%Shape named without a conflict, pack lines that agree, and a steel name that does not contradict itself. Partial marks when two lines on the same page disagree.
Kit
20%A dispenser named on the listing, a second point described, and a named knife or one brand family. A line such as all standard knives is not a named fit.
Price position
15%The shelf price on 15 October 2026. A full mark needs a pack count whose title, unit count and included line agree. An unreadable count is not turned into a per-blade sum.
Start with the knife, not the word blade in the title. The spare has to be a two-point trapezoid. Snap-off strips, hook blades, plaster trowels and lathe blanks are other products. Then read the pack count, and divide the price only when the title, the unit count and the included line agree. Take millimetres from the maker. A dispenser that stores used blades is a different offer from a card. The six amazon.co.uk listings here were checked on 15 October 2026, from about £7.36 to about £15.94.
A trapezoid blade is the two-point spare for a retractable or folding utility knife. You reverse it for a second corner. You do not snap it. A 9 mm, 18 mm or 25 mm snap-off blade will not seat in the knife. A hook blade, a lathe blank or a plastering trowel is a different product. A hook is a pull-cut for carpet, felt and some vinyl. Stanley's catalogue size for the large hook is about 50 mm by 19 mm by 0.65 mm.
A 9 mm, 18 mm or 25 mm snap-off blade will not seat in a two-point trapezoid knife. Hook blades, lathe blanks and plastering trowels are different products as well.
Divide the shelf price only when the title, the unit count and the included line agree. The Stanley title says a pack of 3 and the components line says a pack of 10. Tough Master's included line does not match the pack of 2.
The 4.7 from 1,230 is not a blade-only score. Most of the first 50 texts are other Milwaukee tools, and the extract never uses the word trapezoid.
The knife decides the blade. It has to take a two-point trapezoid spare. A snap-off blade will not seat in it, and a hook, a plastering trowel or a lathe blank is another product. Straight blades and hook blades are both sold for carpet and vinyl, and one shape does not retire the other. Divide the price only when the title, the unit count and the included-components line agree. The Stanley listing does not: the title says a pack of 3 and the components line says a pack of 10.
A dispenser and a card are different offers. Bosch's 50-pack feeds one blade or five and stores used blades. KS Tools names a storage dispenser and no knife model. Stanley's bullets do not name a dispenser, though UK reviews describe a cassette. Tough Master's title says a blister card and a bullet says a plastic case. The Bosch folding-knife pack says a one-hand dispenser in the title and a blister in the included line, and several bullets describe the knife handle rather than the spare.
Three typical situations, each with a recommendation from this comparison.
You already own a Stanley utility knife and you cut cardboard, packages or foam board. Stanley 1992 is the two-point blade those UK reviews describe, at about £10.86. Read the live pack count first: the title says a pack of 3 and the components line says a pack of 10.
You use a Bosch Professional trapezoid knife often enough to keep 50 spares, and you want used blades in the case. The 50-pack at about £15.55 feeds one blade or five. The bullet limits the fit to Bosch Professional standard universal knives.
You want the lowest shelf price and a millimetre size printed in the title. Tough Master is about £7.36, at 19 × 60 × 0.6 mm, with no reviews. The pack lines do not agree, so do not divide that price into a per-blade figure.
The top pick is the Bosch 50-blade dispenser at about £15.55. The count, the dispenser and the blade reviews agree, with a steel conflict on the page and one UK review that the pack is not worth the money. The best value is Tough Master at about £7.36, with 19 × 60 × 0.6 mm in the title and no reviews. Stanley is not a per-blade value winner, because the title says a pack of 3 and the components line says a pack of 10.
Tough Master trapezoidal blades
Lowest shelf price here, about £7.36, with the millimetre size in the title and no star line.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Maker pages, UK knife law and HSE guidance on hand knives. Listings checked 15 October 2026. Prices on amazon.co.uk move.
This page contains affiliate links to amazon.co.uk. If you buy through them, we may earn a commission at no extra cost to you. Scores compare published listings and review texts. They are not a laboratory test.
