Faithfull
Faithfull Diamond Sharpening Stone 4 Sided 150 x 50 x 50mm FAIDWQUAD
Model FAIDWQUAD
Best price
Where to buy
| Retailer | Price | Availability | Visit |
|---|---|---|---|
| Cheapestchecked 2 hours ago | £22.38 | In stock | Visit Blueperry agriculture (UK) (opens in a new tab) |
 checked 2 hours ago | £23.95£33.90 | In stock | Visit Tooled Up (opens in a new tab) |
 retailer's price from 16 Jul 2026 | £25.41 | In stock | Visit Blueperry Tool & Builders Merchants (UK) (opens in a new tab) |
Prices exclude delivery. We may earn a commission if you buy through these links, which never affects the ranking above — it is always cheapest first.
Price history
Full price historyToday's price is above the 53-day average and 4% above the lowest we have recorded, so it may be worth waiting.
About this product
This is a 4-sided diamond sharpening stone suitable for workshop or site use, capable of sharpening steel, HSS and tungsten carbide tools, and also useful for abrading glass, ceramic tiles and porcelain. It offers four colour-coded grit levels: Extra Coarse (blue) 200 grit, Coarse (yellow) 300 grit, Medium (green) 400 grit and Fine (red) 600 grit, allowing a full sharpening progression from initial edge formation through to finishing and honing. The stone can be used dry or with water as a lubricant, and comes with a worksafe surface gripping base to keep it stable during use. It measures 150mm in length. After use, it should be dried before storage, and cleaned occasionally with soapy water and a soft brush.
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