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Best grinding discs for a UK angle grinder

Updated: 21 October 2026

You want the best grinding discs you can order today, and amazon.co.uk is showing three boxes that all sit at 4.6 stars. This page names which pack fits a 115 mm guard, which pack fits a 125 mm guard, and which one is a fine grit rather than a weld-dressing wheel. The full table is on the [grinding discs comparison](/hub/sanders/grinding-discs). Peter F. read the amazon.co.uk listings and the review notes already on file on 19 October 2026. There was no lab test and no tachometer check. A qualifying purchase can earn a commission at no extra cost to you.

You want the best grinding discs you can order today, and amazon.co.uk is showing three boxes that all sit at 4.6 stars.

Our top picks

Merryland Merryland 125 mm grinding wheels (10)

Best overall

Merryland Merryland 125 mm grinding wheels (10)
4.5/10about £17.90
View offer
Merryland Merryland 115 mm grinding wheels (10)

Rank 2

Merryland Merryland 115 mm grinding wheels (10)
6.8/10about £15.90
View offer
Hilka Hilka Turbo Flex grinding discs (5)

Best value

Hilka Hilka Turbo Flex grinding discs (5)
5.5/10about £10.02
View offer
On this page
  1. 1.How these three packs were separated
  2. 2.Top pick for a 115 mm guard
  3. 3.Best value, and the only 125 mm pack
  4. 4.What the shared 4.6 rating does not prove

How these three packs were separated

All three sit at 4.6 on amazon.co.uk, so the star cannot pick a winner. The 115 mm Merryland pack has 1,006 reviews, the 125 mm pack has 1,074, and Hilka has 844. The score turns on whether reviews describe face grinding, whether diameter, bore, thickness and rpm agree, and what you pay. The top pick prints 115 x 6.0 x 22.23 mm, a maximum speed and a named standard. The best value is the smaller box on a 115 mm grinder, not the cheapest disc per pack. A 4.6 built from cutting-disc stories is a weak grinding result.

Top pick for a 115 mm guard

If your guard is 115 mm and you want the speed printed on the page, the top pick is the Merryland ten-pack at £15.90. The bullets say 115 x 6.0 x 22.23 mm, 13,300 rpm, EN 12413 and shape T27. UK reviewers mention a small grinding job and an edge that holds. Skip it if the grit fields clash: the material line says A30R-BF and the grit field says 46. One UK reviewer reported a first disc breaking, and another described 115 x 3 mm discs, so check thickness on arrival. The listed 140 g is not a ten-pack weight.
Merryland Merryland 125 mm grinding wheels (10)

Testsieger

Merryland Merryland 125 mm grinding wheels (10)
4.5/10about £17.90
View offer

Best value, and the only 125 mm pack

The best value on that same 115 mm guard is the Hilka Turbo Flex five-pack at £10.02, about £2.00 a disc, against about £1.59 for the Merryland ten-pack. You are paying for a smaller outlay, not the cheapest wheel. Grit 180 aluminium oxide is a finishing grade. UK reviews praise the price and also describe cutting steel drums, and the listing does not print bore or maximum rpm. Read the ring before the first spin. Skip Hilka for a heavy weld bead. If your guard is 125 mm, neither 115 mm pack is the right diameter. The only 125 mm listing here is Merryland at £17.90 for ten discs, with 12,250 rpm and EN 12413 claimed. It does not take an award. Many reviews describe cutting, one report says the disc sits about 2 mm outside a 125 mm guard, and the grit field says 60 against A30R-BF. A wider set of 125 mm packs is on 125mm grinding discs. Measure the wheel against the guard before you remove anything.

What the shared 4.6 rating does not prove

The Best Sellers Rank for the Merryland 115 mm pack and for Hilka sits under cut-off wheels. That is a catalogue bucket, not a thickness measurement. A review that praises cutting steel can be a happy customer and a bad witness for a 6 mm face. Stainless in both Merryland titles is a listing claim, not an iron-free certificate. Hilka only says metal. HSE's HSG17 expects a readable use-by date of about three years on resin-bonded hand-held wheels, and none of these scores includes a date checked on a ring. Diameter, grit and the date are on the grinding disc buying guide. Guard diameter is 115 mm vs 125 mm.

Common questions

Which of these is the top pick?
For a 115 mm grinder, the top pick is the Merryland ten-pack at £15.90. The listing prints 6.0 mm, a 22.23 mm bore and 13,300 rpm, and some UK reviews describe grinding metal. It is 4.6 from 1,006 reviews. Skip it for a 125 mm guard, or when the grit field must match A30R-BF with no clash.
Which pack is the best value?
The best value here is Hilka at £10.02 for five 115 mm discs. The award is the smaller box, not the lowest price per disc, which is the Merryland ten-pack at about £1.59. Hilka is grit 180 and does not print rpm or bore. It is a poor buy for coarse weld removal.
Why not buy the 125 mm Merryland on star rating alone?
It is 4.6 from 1,074 reviews at £17.90, with 12,250 rpm claimed, and it is the only 125 mm pack in this comparison. The review texts often describe cutting, and one report says the disc is about 2 mm too large for a 125 mm guard. Stars do not override a wheel that will not sit inside the guard.
Is Hilka grit 180 all right for welds?
It will abrade metal, and reviewers say the discs do the job, but grit 180 is finer than the 24–36 band used for heavy stock removal. A weld bead will take longer than it would on an A30 wheel. Use Hilka for light finishing on a 115 mm grinder after you read the ring for speed.
Can I put the 115 mm top pick on a 125 mm grinder?
No. A smaller disc on a larger guard is still the wrong diameter match, and the reverse is worse because a 125 mm wheel stands proud of a 115 mm guard. Buy the Merryland size that matches the guard you own. The shared 22.23 mm bore is not permission to swap them.
Do these reviews prove the discs are safe?
No. A star row is not a safety test, and these wheels were not spun for this page. You still need the grinding guard, a disc rated at least as fast as the grinder, a readable use-by date, and an undamaged wheel. At work, mounting wheels is a trained task under PUWER, not a step you improvise from a review title.

Related pages

Grinding disc vs cutting disc

Grinding discs

115 mm vs 125 mm grinding disc: guard size and rpm

Grinding disc buying guide: diameter, grit and rpm

How to use a grinding disc: guard, flange and angle

Sources

Sources taken from the research digest. Prices, stars and review counts are the stored amazon.co.uk listing figures.

  1. HSE HSG17 — safety in the use of abrasive wheels (retrieved 19.10.2026)
  2. HSE — PUWER overview (retrieved 19.10.2026)
  3. FEPA — safety leaflet, bonded abrasives (retrieved 19.10.2026)
  4. Cutwel — expert guide to grinding discs (retrieved 19.10.2026)
  5. Cutwel — Klingspor A 24 R grinding wheels (retrieved 19.10.2026)
  6. Abrasives Safety — reinforced bonded wheels (retrieved 19.10.2026)