Best 350mm diamond blade
Updated: October 2026
The best 350mm diamond blade is not automatically the listing with the highest star score. It is the one that matches your saw's diameter and bore, explicitly covers the material, and gives enough reliable specification to justify its price. Among the five retained amazon.co.uk listings, our top pick for a 20 mm concrete saw is the PRODIAMANT 350 mm, while the OX Contractor is the best-value option for its stated general-masonry applications. Check the full [350 mm diamond blade comparison](/hub/tool-accessories/350mm-diamond-blade) for the captured fields and prices before ordering. A qualifying purchase can earn a commission at no extra cost to you.
The best 350mm diamond blade is not automatically the listing with the highest star score.
The best 350mm diamond blade is not automatically the listing with the highest star score. It is the one that matches your saw's diameter and bore, explicitly covers the material, and gives enough reliable specification to justify its price. Among the five retained amazon.co.uk listings, our top pick for a 20 mm concrete saw is the PRODIAMANT 350 mm, while the OX Contractor is the best-value option for its stated general-masonry applications. Check the full 350 mm diamond blade comparison for the captured fields and prices before ordering. A qualifying purchase can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Material named | Bore | Segment | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  GVHAKG GVHAKG 350 mm concrete and asphalt | Concrete and asphalt | 20 mm | 15 mm segmented | 7.9 | about £50.82 | View offer |
 PRODIAMANT PRODIAMANT 350 mm, 20 mm bore | Concrete and masonry | 20 mm | 15 mm turbo | 9.0 | about £54.78 | View offer | |
| Best value |  OX OX Contractor CG15 350 mm | Bricks and paviours | 20 mm | 15 mm turbo | 7.4 | about £30.92 | View offer |
On this page
Top pick for a 20 mm concrete saw
The PRODIAMANT B0171VPD7A is the strongest all-round choice when the machine takes a 350 mm wheel with a 20 mm bore and the work is concrete or masonry. Its listing names concrete, reinforced concrete, granite, concrete products, granite kerbs, bricks and masonry. It states wet and dry cutting, a 15 mm turbo segment, 3.5 mm blade thickness, 24 segments and EN 13236. At the captured price of £54.78, that is a more complete specification than the lower-priced OX Contractor provides.
Asphalt is not named, so a driveway or road cut is not an implied application. The 4.3-star score from 1,078 ratings is shared with the 25.4 mm PRODIAMANT variant. One UK complaint says the blade did not fit a Stihl saw without a washer that was not supplied. Choose it when the blade label and saw manual agree on diameter, bore and speed. The 350 mm blade bore and saw-fit page separates the Stihl TS 410, TS 420 and Husqvarna cases.
Best value when budget is the constraint
The OX Contractor CG15-350/20 is the best-value pick at the captured £30.92 because it keeps a useful core specification: 350 mm diameter, 20 mm bore, 15 mm turbo segment and EN 13236 wording. OX names bricks, slabs, roof tiles and concrete paviours, and describes the Contractor line as an entry-level general-purpose option. At the captured prices it costs £23.86 less than the 20 mm PRODIAMANT.
There is no customer-review line in the captured amazon.co.uk data. Wet or dry use is not stated, and the thickness field appears to repeat the 15 mm segment height rather than give the kerf. Reinforced concrete, asphalt and metal are not named. Buy it when the saw is confirmed for 350 x 20 mm and the material is among those listed uses.
When another listing is the one to buy
The PRODIAMANT B0171VPDSO is the logical alternative when the saw genuinely has a 25.4 mm arbor. It has the same broad concrete and masonry focus, a 15 mm turbo segment, 3.5 mm thickness, wet and dry wording and an EN 13236 statement. Its captured £51.83 price is slightly lower than the 20 mm version. No reduction ring is listed, so it should not be ordered for a 20 mm shaft on the assumption that an adaptor will arrive.
For asphalt, GVHAKG B0FHQF6ZJJ is the only retained listing that explicitly names the material. It states 350 mm, a 20 mm bore, a 15 mm segmented rim, 3.2 mm thickness, 24 segments and wet or dry cutting for concrete, asphalt, brick, block and stone, at a captured £50.82. Its 4.7 stars from 46 ratings are not clean evidence, because many captured reviews refer to 115 mm packs. See the concrete or asphalt diamond blade guide for the bond trade-off.
The OX Pro V10 names reinforced concrete, metal, brick, granite, Indian stone and hard clay, with a 20 mm bore, a 10 mm turbo segment and cooling holes. The included-components line says 300/20 mm while the title and V10-350/20 model indicate 350 mm. At £72.70 it is the dearest row, and most captured reviews behind its 4.8-star line concern smaller discs.
What best must not mean
None of these listings supports a claim of longest life. Segment height alone cannot establish service life, and mixed-size Amazon ratings cannot substitute for a controlled comparison. EN 13236 wording is useful, but safety depends on the correct wheel, speed, mounting, guard, cutting method and condition.
There is not one blade for every Stihl saw. Stihl UK specifies a 300 mm wheel for the TS 410 and a 350 mm wheel for the TS 420. The five listings also split between 20 mm and 25.4 mm. Use the ranking only after those checks. The 350mm diamond blade buying guide gives the order: diameter, bore, material, segment and kerf, markings and maximum speed, then price.
Common questions
Which 350 mm blade is the top pick for a 20 mm saw?
The 20 mm PRODIAMANT is our top pick for concrete and masonry because it states reinforced concrete, wet and dry use, a 15 mm segment, 3.5 mm thickness and EN 13236. It is not the pick for asphalt or a 25.4 mm arbor.
Is the cheaper OX Contractor good enough?
It can be a sensible best-value choice for the bricks, slabs, roof tiles and concrete paviours named by OX. The captured listing lacks reviews, a reliable kerf and wet-or-dry wording, so check those points if they matter to your saw or method.
When is the 25.4 mm PRODIAMANT right?
Choose it when the machine specification calls for a 350 mm blade with a 25.4 mm bore and the job is among its named concrete and masonry applications. The listing does not include a reducing ring, so it is not a direct 20 mm option.
Should I pay £72.70 for the OX Pro V10?
Only after confirming that the supplied disc is 350 mm and that you need the stated metal or reinforced-concrete coverage. The listing contains a 300 mm components conflict, and most captured reviews concern smaller sizes, so the 4.8 stars do not settle the question.
Which listing actually names asphalt?
GVHAKG is the only retained listing that explicitly names asphalt. It also states wet and dry cutting and a 20 mm bore. Its mixed-size review pool does not prove durability, and no undercutting protection is stated.
Is there a 350 mm blade that fits every Stihl?
No. The TS 410 is specified for 300 mm wheels, while the TS 420 accepts 350 mm wheels and UK dealer data lists a 20 mm bore. Always check the exact model, guard, speed and arbor rather than buying by brand alone.
Related pages
Sources
Public UK sources for silica, training, marking and saw size. amazon.co.uk listings for B0171VPD7A, B0171VPDSO, B0D8BQZKZQ, B0H4ZJ3T28 and B0FHQF6ZJJ were checked in October 2026. Prices move.
- HSE CIS54, dust from cutting and drilling (retrieved 17 October 2026)
- HSE INDG461, respirable crystalline silica (retrieved 17 October 2026)
- HSE, cutting paving blocks, kerbs and flags (retrieved 17 October 2026)
- HSE CN6, cutting paving and kerbs (retrieved 17 October 2026)
- PUWER 1998 regulation 9, training (retrieved 17 October 2026)
- FEPA safety leaflet, diamond saws on petrol cut-off machines (retrieved 17 October 2026)
- OSA, marking to EN 13236 (retrieved 17 October 2026)
- Stihl UK, TS 410 petrol cut-off machine (retrieved 17 October 2026)