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Best diamond cup wheel for concrete

Updated: 21 October 2026

A concrete high spot on a 115 mm angle grinder is the job most of these reviews describe. A whole slab is a different machine. The best diamond cup wheel for concrete, on the evidence we have, is the cup whose diameter, bore and maximum speed match your grinder, and whose review file is large enough to show both praise and wear. There is no UK lab test in this set, and a 5.0 from two ratings is not one. The [diamond cup wheel comparison](/hub/sanders/diamond-cup-wheel) lists every kept ASIN. Prices and counts are from amazon.co.uk on 19 October 2026. Peter F. did not grind a slab. A qualifying purchase can earn a commission at no extra cost to you.

A concrete high spot on a 115 mm angle grinder is the job most of these reviews describe. A whole slab is a different machine.

Our top picks

BRSCHNITT BRSCHNITT 115 mm double row

Best overall

BRSCHNITT BRSCHNITT 115 mm double row
8.2/10about £15.99
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BRSCHNITT BRSCHNITT 115 mm turbo row

Rank 2

BRSCHNITT BRSCHNITT 115 mm turbo row
8.4/10about £16.99
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SHDIATOOL SHDIATOOL 115 mm turbo row

Rank 3

SHDIATOOL SHDIATOOL 115 mm turbo row
8.6/10about £18.99
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On this page
  1. 1.What best can mean without a lab
  2. 2.115 mm cups with a large review count
  3. 3.When the cheaper cup is the one that fits
  4. 4.Listings that are too thin or too contradictory

What best can mean without a lab

For a local concrete lip the cup should be 115 mm if that is your grinder, with a stated 22.23 mm bore and one maximum around 13,200 rpm. None of the three cups with a long written file is a measured winner. Yikuneng's 5.0 from two reviews is weaker evidence than 4.4 from 426. A cheaper cup can still be the right cup when your grinder is 125 mm or 100 mm. Diameter and bore are in the diamond cup wheel buying guide.

115 mm cups with a large review count

SHDIATOOL's A521014522 suits a stated 115 mm fit and a long file: turbo row, bore 22.23 mm, grit 40/50, maximum 13,200 rpm, £18.99, 4.4 from 426. At 470 g it shifts a small grinder, one buyer returned it for no bite on render, and one review found about 22 mm of height would not meet a third-party shroud. The BRSCHNITT turbo is the pick when volume matters: 4.5 from 446. One garage floor used five discs on about 25 m², and the thickness field says 4.5 inches. The double row is the best value if a smaller file is enough: £15.99, 4.6 from 129, and one 13,200 rpm maximum. WORKPRO (4.6 from 30) and KURSTOL (4.4 from 65) are thinner files, and KURSTOL's uses field says sharpening.
BRSCHNITT BRSCHNITT 115 mm double row

Testsieger

BRSCHNITT BRSCHNITT 115 mm double row
8.2/10about £15.99
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When the cheaper cup is the one that fits

QWORK at £7.98 fits a 125 mm grinder. It is 4.6 from 446 reviews, grit 40, with concrete lumps and adhesive in the written reviews, and a 22.23 mm bore in the bullets. There is no maximum rpm, and some reviewers needed a washer on the collar. That 446 is QWORK's own count. Skip QWORK on a 115 mm guard. The Bujingyun packs fit only a 100 mm grinder, at £8.88 and £12.88, and both show 4.5 from 264 as one shared pool. Reviews report a hole nearer 20 mm, and neither states a maximum rpm. A small step on a real 100 mm grinder is the use that matches, once the hole in the box matches the spindle.

Listings that are too thin or too contradictory

Yikuneng at £13.99 is 5.0 from two reviews, with 13,200 rpm in one place and 15,000 rpm in the bullets. Two ratings cannot show wear. HIGHDRIL at £16.99 is 4.5 from 91, and the maximum swaps between 8,000 rpm and 13,200 rpm. worksky at £18.99 is a 125 mm cup, 4.7 from nine reviews, with bore and grit missing, and the part number prints 115. One review wore it out before half the job. Confirm the bore on the cup you receive. A floor-sized area is covered in the diamond cup wheel for a concrete floor guide. Mounting and silica dust are in how to use a diamond cup wheel.

Common questions

Which cup is best for a 115 mm grinder on concrete?
For a local high spot, SHDIATOOL at £18.99 has the stated 22.23 mm bore, a 13,200 rpm maximum and 4.4 from 426 reviews. The BRSCHNITT turbo at £16.99 has the larger count, 4.5 from 446, with more wear complaints. The double row at £15.99 is 4.6 from 129. Choose on fit and how much review text you want. There is no lab crown in this set.
Is the 5.0 score the winner?
Yikuneng's 5.0 comes from two reviews. SHDIATOOL's 4.4 comes from 426 and the BRSCHNITT turbo's 4.5 comes from 446. A perfect score on a tiny sample cannot show wear or returns. Treat two ratings as a start, and wait until the speed mark on the wheel agrees with itself.
Is the cheapest 125 mm cup good enough?
QWORK at £7.98 is 4.6 from 446 and the reviews mention concrete and adhesive. It is good enough on a 125 mm grinder, and the listing gives no maximum rpm. Some buyers needed a washer on the collar. On a 115 mm grinder the diameter is wrong, however low the price.
Do I need the £18.99 SHDIATOOL instead of the £15.99 double row?
Choose SHDIATOOL if you want the 426-review file and you accept a 470 g cup. The £15.99 BRSCHNITT double row has the same 115 mm bore and a 13,200 rpm maximum, with 4.6 from 129 reviews. That is enough for brick steps and a modest patch. It is a thinner file if you wanted hundreds of concrete comments first.
Are the Bujingyun packs a false economy?
They are a poor buy on a 115 mm grinder with a 22.23 mm spindle. The packs are 100 mm, the bore is listed as 22 mm, and reviews report a hole nearer 20 mm. The 4.5 from 264 is one shared line across both pack sizes. On a genuine 100 mm grinder, after you have checked the hole, the £8.88 2-pack is the cheaper way to try a small step.
Which listing should I skip because the speed line conflicts?
Skip HIGHDRIL until you can read the wheel: the listing swaps 8,000 rpm and 13,200 rpm. Skip Yikuneng on the same grounds: 13,200 rpm in the field and 15,000 rpm in the bullets, from only two reviews. QWORK and Bujingyun list no maximum, so they are a skip when you need a speed before you order.

Related pages

Turbo row or double row

Diamond cup wheel

Diamond cup wheel buying guide: bore, speed and grit

Diamond cup wheel for a concrete floor: when to hire

How to use a diamond cup wheel: guard, speed and dust

Sources

Sources taken from the research digest. Prices, stars and review counts are the stored amazon.co.uk listing figures for 19 October 2026.

  1. HSE — scabbling or grinding (retrieved 19.10.2026)
  2. HSE INDG463 — silica dust (retrieved 19.10.2026)
  3. HSE CIS69 — on-tool extraction (retrieved 19.10.2026)
  4. HSE ST3 — stonework controls (retrieved 19.10.2026)
  5. HSE HSG17 — abrasive wheels (retrieved 19.10.2026)
  6. BSI BS EN 13236:2019 (retrieved 19.10.2026)
  7. oSa — EN 13236 marking note (retrieved 19.10.2026)
  8. FEPA — diamond dish cups (retrieved 19.10.2026)
  9. amazon.co.uk — concrete grinding disc (retrieved 19.10.2026)