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Turbo row vs double row diamond cup

Updated: 21 October 2026

You are looking at two 115 mm cups that both claim to take concrete off quickly, and the photos do not look like the same wheel. American guides rank a turbo row and a double row in opposite directions, and they price the work in dollars, so they cannot settle a UK basket. This turbo row vs double row diamond cup page stays on the cups we kept. Bore, speed and dust decide whether a cup may be fitted at all. The [diamond cup wheel comparison](/hub/sanders/diamond-cup-wheel) holds the full table. Peter F. compared amazon.co.uk listings on 19 October 2026 and did not run a wear test. A qualifying purchase can earn a commission at no extra cost to you.

You are looking at two 115 mm cups that both claim to take concrete off quickly, and the photos do not look like the same wheel.

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
View offer
SHDIATOOL SHDIATOOL 115 mm turbo row

Rank 3

SHDIATOOL SHDIATOOL 115 mm turbo row
8.6/10about £18.99
View offer
On this page
  1. 1.What the two rims are
  2. 2.What the listings promise
  3. 3.Why a single winner is not available
  4. 4.Which kept cup is which

What the two rims are

A turbo row here is a diamond rim sold as a smoother, more continuous face. SHDIATOOL, the BRSCHNITT turbo, HIGHDRIL and KURSTOL are listed that way. A double row is two rings of segments. The BRSCHNITT double row, WORKPRO and Yikuneng are that shape. WORKPRO states 18 segments. Bujingyun's 100 mm packs are a 12-segment turbo, a third shape. A double row is not two turbo rims stacked. Diameter and bore still come before the photo. Those checks are the diamond cup wheel buying guide.

What the listings promise

BRSCHNITT's turbo (B09MQ36KNP, £16.99) is sold as fast removal with less chatter. It is 4.5 from 446 reviews. A garage-floor review used five discs on about 25 m². That is one reviewer's floor, not a rule that every turbo wears out faster. WORKPRO's double row (£14.99) is sold as 18 segments for aggressive preparation, with one maximum of 13,300 rpm, and 4.6 from 30 reviews. The file is too short for an hour on screed. BRSCHNITT's double row (£15.99) is 4.6 from 129, with one 13,200 rpm maximum. Neither listing is a measured comparison of the two cups on one slab.
BRSCHNITT BRSCHNITT 115 mm double row

Testsieger

BRSCHNITT BRSCHNITT 115 mm double row
8.2/10about £15.99
View offer

Why a single winner is not available

Two US guides contradict each other. Concrete Cutting Pro treats a turbo spiral as the smoothest and the slowest, and a double row as the general pick. Mesa Diamond treats the double row as the roughing wheel and the turbo as fast with a smoother face. Both use US prices and, where they give a life, square feet. Those figures are not UK evidence. There is no UK magazine test of these ASINs. Almost every 115 mm cup here is grit 40 or 40/50, so grit does not break the tie. Choose the rim whose photo matches the finish you can live with. A whole slab is a hire whichever rim you prefer, and that limit is the diamond cup wheel for a concrete floor page.

Which kept cup is which

Turbo row at 115 mm: SHDIATOOL at £18.99 (4.4 from 426), BRSCHNITT B09MQ36KNP at £16.99 (4.5 from 446), KURSTOL at £16.99 (4.4 from 65) and HIGHDRIL at £16.99 (4.5 from 91). HIGHDRIL's speed lines swap 8,000 rpm and 13,200 rpm. Double row at 115 mm: BRSCHNITT B09MQ3NXZ5 at £15.99 (4.6 from 129), WORKPRO at £14.99 (4.6 from 30) and Yikuneng at £13.99 (5.0 from two reviews, with 13,200 and 15,000 rpm on the page). Bujingyun's 100 mm packs are a third shape. On a 115 mm grinder, pick the BRSCHNITT turbo for the larger review file, and the BRSCHNITT double row when you want £15.99 and one stated 13,200 rpm. The guard stays on for either rim. Mounting is in how to use a diamond cup wheel.

Common questions

Which pattern removes concrete faster?
These UK cups have not been measured against each other. BRSCHNITT's turbo listing claims fast removal with less chatter. WORKPRO's double row claims aggressive preparation from 18 segments. US guides disagree, and their life figures are in square feet. On a single high spot, a stated maximum speed and the right bore change the result more than the rim name.
Which leaves a smoother face?
BRSCHNITT sells the turbo as the lower-chatter cup. One US guide calls a turbo smoother, and another calls it the slow shape. There is no UK surface measurement in this set. Judge the finish from the listing photo and from a small pass on the lip you can see. A smoother claim does not survive the wrong bore.
Is a double row just two turbo rims?
A double row is two rings of separate segments. WORKPRO states 18 of them. A turbo row is a different layout, sold as a more continuous face. Bujingyun's 12-segment 100 mm cups are a smaller turbo, a third shape. The product photo shows the difference. The names are not two counts of the same segment.
Does grit 40 change the pattern choice?
Grit 40 or 40/50 is on both the turbo cups and the double-row cups in the 115 mm group, so the number does not choose the rim. Bujingyun's grit 60 arrives with a 100 mm cup, which is a size change. Ignore Amazon's Fine label when the number says 40. The pattern is the photo.
Are 12-segment 100 mm cups the same as a turbo row?
They are sold as a small turbo, and they are not the 115 mm turbo row. Bujingyun's packs are 100 mm, listed bore 22 mm, with reviews of a hole nearer 20 mm, and they share one 4.5 from 264 line. Use them on a 100 mm grinder after the hole matches. They are the wrong diameter for a 115 mm guard.
Should I buy both?
Buy both only when you have two finishes to try and both cups match the diameter, the 22.23 mm bore and one maximum rpm. For a single doorway lip, one cup is enough. The BRSCHNITT pair, at £16.99 and £15.99, is the clearest way to compare the two shapes on a 115 mm machine, if you have read the wear note on the turbo first.

Related pages

Best diamond cup wheel for concrete

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)