Irwin
Irwin IRWIN® HSS Pro TiN Coated Drill Bit 3.5mm OL:70mm WL39mm 10502580
Model 10502580
Best price
Lowest we’ve seenWhere to buy
| Retailer | Price | Availability | Visit |
|---|---|---|---|
| Cheapestchecked an hour ago | £1.43 | In stock | Visit Blueperry agriculture (UK) (opens in a new tab) |
 checked an hour ago | £1.49£1.98 | In stock | Visit Tooled Up (opens in a new tab) |
 retailer's price from 16 Jul 2026 | £2.28 | 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 historyThis is the lowest price we have recorded. If you were waiting for a drop, this is it.
About this product
This is a 3.5mm HSS Pro TiN Coated Drill Bit from Irwin, supplied as a single bit with an overall length of 70mm and working length of 39mm. It is designed for drilling metal and harder, tougher alloys, making it suited to metal fabrication, electrical installations and general metalworking where precise pilot holes are needed. The bit body is made from high-quality HSS steel with a 2.5 micron Titanium Nitride coating of around 80 HRC hardness, giving good wear resistance. Compared with standard HSS bits, speed can be increased by 40-60% and feed by 10-20% without significantly reducing tool life, as the low-friction coating directs heat into the chips and coolant rather than the bit itself. A 135° split point tip provides accurate centring from first contact, reducing drilling pressure and the need for centre punching.
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