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Best filling knife: who each of four listings suits

Updated: 21 October 2026

Best filling knife searches on amazon.co.uk reward the highest star average, even when that average pools widths or a stainless line fails in the wash. This page covers four listings on the [filling knife comparison](/hub/painting-supplies/filling-knife). Scores there are Harris 8.5, Axus 8.0, ROLLINGDOG 6.3 and ZAVIA 5.6. They sum reviews and fit. Harris is the top pick for a sized pack. Axus is the best value handled knife if you measure the blade. Peter F. did not run a lab test. A qualifying purchase through our links can earn us a commission at no extra cost to you.

Best filling knife searches on amazon.co.uk reward the highest star average, even when that average pools widths or a stainless line fails in the wash.

Our top picks

Axus Decor Axus Decor Pro-Fill

Best overall

Axus Decor Axus Decor Pro-Fill
8.0/10about £5.39
View offer
ROLLINGDOG ROLLINGDOG set

Alternative

ROLLINGDOG ROLLINGDOG set
6.3/10about £25.99
View offer
Harris Harris Seriously Good

Rank 3

Harris Harris Seriously Good
8.5/10about £5.04
View offer
On this page
  1. 1.Four listings, not a market survey
  2. 2.A sized pack when you want every width printed
  3. 3.One handled knife when you will measure the title width
  4. 4.Who should skip the other two

Four listings, not a market survey

These four ASINs are a sample, not the whole Putty Knives aisle. The spread is about £3.99 to about £25.99, and from 4.1 on 40 reviews to 4.6 on 3,982. The highest star count is not the top pick for every job. Axus shows 4.7 from 1,393 reviews and the title width is contested. Flex, width and handle are on the filling knife buying guide. This page names who should buy.

A sized pack when you want every width printed

Harris Seriously Good, B0866PJXCX, is about £5.04, model 102064328. The box lists 2, 3, 4 and 5 inch flexible stainless blades with rubber (TPR) grips. The star line is 4.6 from 3,982 reviews. Several UK comments say the steel cuts fingers. One returned pack had a burr on every knife and a bent corner on the second-smallest blade. Aftercare on harrisbrushes.com is warm soapy water, then dry completely. Buy it for varied hole sizes if you will treat the edges as sharp. Skip it for one handled knife, or if that burr story puts you off. The Harris Ultimate 2 inch high-carbon knife is a different product. Treat the grip as rubber (TPR).
Axus Decor Axus Decor Pro-Fill

Testsieger

Axus Decor Axus Decor Pro-Fill
8.0/10about £5.39
View offer

One handled knife when you will measure the title width

Axus Decor Pro-Fill AXU/FKB2 is about £5.39: a rubber handle, a hanging hole and a title width of 2 inch / 50 mm. The listing calls the blade ultra-flexible stainless steel for gaps on walls, ceilings and wood. Reviews that mention rust say it did not rust. One edge defect appears. The star line is 4.7 from 1,393 reviews, beside a dimensions row of 53 cm by 7 cm. Reviews also say 4 inch or 25 mm. A 6 inch sibling shares that 53 cm row, which looks like catalogue text. Buy it when you will measure one handled blade against the title. It is the best value here for that shape. Skip it when you need several widths at once. The maker lists 1 inch through 6 inch separately. This ASIN is only the 2 inch title.

Who should skip the other two

ROLLINGDOG B08G8G3KTN is about £25.99, model 50361, with beech handles, stated 1 to 4 inch blades, and a bullet claim of 420 stainless and a full tang. The title also says wallpaper scrapers. Reviews mention filler, sticker residue, a 2 inch blade that snapped on nail holes under light pressure, a blade that failed after about five months, and a loose handle. Some wanted more flex. Skip it for a floppy feathering blade, or when about £26 is too much for one room. ZAVIA B0FPG2B47B is about £3.99, four plastic-grip blades, widths not printed, 4.1 from 40 reviews. Two of eleven UK texts say rust after water. Three mention cuts. Buy it only as a weekend pack you will dry. Crack limits are on filling knife for wall cracks. The bend against a stripping knife is on filling knife or stripping knife.

Common questions

Which of these four should you buy first?
For several hole sizes, Harris at about £5.04 is the top pick because 2, 3, 4 and 5 inch are printed, if you treat the edges as sharp. For one handled knife, measure Axus after delivery. At about £5.39 it is the best value for that shape.
Who should skip the Harris pack?
Skip Harris if you want one rubber-handled knife, if cut-finger reports put you off, or if a returned pack with a burr on every knife is a story you will not accept. The Ultimate 2 inch high-carbon knife is a different Harris product.
Is the cheapest pack the best value?
ZAVIA at about £3.99 is the lowest price, not the best value for most buyers. Widths are unnumbered, the line is 4.1 from 40 reviews, and two UK texts dispute stainless after water. Axus is the best value handled knife. Harris is the sized pack.
When is the ROLLINGDOG set the wrong filling knife?
When you need maximum flex, when snap and sticker reports matter, or when you will not use a blade also sold as a wallpaper scraper. The set claims 420 stainless at 1 to 4 inch and costs about £25.99. One review says the 2 inch blade snapped on nail holes.
Can you trust a stainless claim?
Only after you dry the blade. ZAVIA’s UK reviews contradict stainless after water. Axus reviews that mention rust say the blade did not. Harris aftercare is warm soapy water, then dry completely. A stainless line is not a reason to shut a wet blade in a drawer.
Why is 4.7 from 1,393 reviews not automatically the top pick?
Because amazon.co.uk can pool sizes, and a width conflict matters more than half a star. Axus has 4.7 from 1,393 reviews and a 2 inch title beside a 53 cm row. Harris, at 4.6 from 3,982, is the top pick when you want printed widths.

Related pages

How to use a filling knife

Filling knife

Filling knife buying guide: width, flex and handle

Filling knife or stripping knife: flex decides the job

Filling knife for wall cracks: fill or call someone

Sources

Public UK sources used for this comparison. Listing prices, stars and review counts are the amazon.co.uk figures saved for these four ASINs. The Harris price was also noted by Morris and Mica on 17 October 2026.

  1. Toolstation, filling and putty knives (retrieved 17 October 2026)
  2. ProDec Advance 2 inch filling knife (retrieved 17 October 2026)
  3. Harris Ultimate 2 inch filling knife (retrieved 17 October 2026)
  4. Polycell Multi Purpose Polyfilla ready mixed (retrieved 17 October 2026)
  5. Toupret, hairline cracks (retrieved 17 October 2026)
  6. HSE, lead in construction (retrieved 17 October 2026)
  7. HSE, sanding plasterboard joints (retrieved 17 October 2026)
  8. Consumer Rights Act 2015, section 11 (retrieved 17 October 2026)
  9. British Coatings Federation, PaintSafe (retrieved 17 October 2026)