Irwin
Irwin IRWIN® HSS Cobalt Drill Bit 4.5mm OL:80mm WL:47mm 10502551
Model 10502551
Best price
Lowest we’ve seenWhere to buy
| Retailer | Price | Availability | Visit |
|---|---|---|---|
| Cheapestchecked an hour ago | £3.24 | In stock | Visit Blueperry agriculture (UK) (opens in a new tab) |
 checked an hour ago | £3.49£4.50 | In stock | Visit Tooled Up (opens in a new tab) |
 retailer's price from 16 Jul 2026 | £4.36 | 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 Irwin 4.5mm HSS Cobalt drill bit is designed for drilling stainless steel and other high alloys, suiting clearance holes, pilot holes and general fabrication work. It has an overall length of 80mm and a working length of 47mm.
The bit body is made from HSS steel containing 5% Cobalt, which improves red hardness and heat resistance, giving extended life over standard HSS bits when drilling tough materials. It has a golden tempered surface finish reflecting this heat treatment.
A 135° split point ensures accurate centring from first contact, reducing drilling pressure and preventing the bit from wandering. The industrial quality ground flute design supports accurate drilling and efficient chip removal, helping to avoid binding during use.
Features and Benefits
- :
- 4.5mm diameter for versatile metalworking tasks
- 5% Cobalt content for superior heat resistance
- 135° split point for perfect centring without centre punching
- Industrial quality ground flute for accuracy and chip removal Specifications: Tip Diameter (mm): 4.5 Working Length (mm): 47 Overall Length (mm): 80 Pack Qty.: 1
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