Faithfull
Faithfull HSSE M35 Cobalt Quick-Change Impact Drill Bit 4.0mm OL:91mm WL:43mm FAIQC400C
Model FAIQC400C
Best price
Where to buy
| Retailer | Price | Availability | Visit |
|---|---|---|---|
| Cheapestchecked yesterday | £2.53 | In stock | Visit Blueperry agriculture (UK) (opens in a new tab) |
 checked within the hour | £2.95£3.84 | In stock | Visit Tooled Up (opens in a new tab) |
 retailer's price from 16 Jul 2026 | £3.42 | 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 below the 53-day average, and 5% above the lowest we have seen.
About this product
This 4mm Faithfull HSSE M35 Cobalt Quick-Change Impact Drill Bit is designed for medium-duty metalworking, suiting pilot holes, mounting holes in steel plate and general fabrication. It has an overall length of 91mm and a working length of 43mm. The tip features 7 cutting edges and 3 peaks, giving self-centring accuracy and faster drilling than conventional split point bits, along with a longer tool life in mild steel. Made from M35 HSSE steel with 5% cobalt for improved heat resistance, it produces a clean cut with minimal burr, and the protruding centre tip prevents wandering. It is impact rated with a 1/4in quick-change shank for use in impact drivers, made to DIN 338 and DIN 3126-E6.3 standards, and suited to alloy steels, stainless steels, cast iron, titanium alloy and carbon fibre composites.
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