# Irwin HSS Cobalt Drill Bit 4.2mm Pack of 1

> Price comparison in United Kingdom (GBP). Lowest price right now: **£6.37** at Tesco Stores, in stock. 3 offers from 2 shops, prices from £3.49 to £6.37. Checked 2026-10-14T18:47:34Z.

## Product
- Brand: IRWIN®
- Category: [Home & garden](https://pricuro.com/uk/home-garden.md) > [Tools](https://pricuro.com/uk/home-garden/tools.md)
- EAN/GTIN: 5709131282976
- Manufacturer part number: 10502549
- Page: https://pricuro.com/uk/p/irwin-hss-cobalt-drill-bit-4-2mm-pack-of-1-944121
- Image: https://pricuro.com/img/944121/800/irwin-hss-cobalt-drill-bit-4-2mm-pack-of-1.webp

## Offers (3, sorted by total price incl. delivery; used/refurbished last)

| # | Shop | Price | Delivery | Total | Availability | Condition | Buy |
|---|---|---|---|---|---|---|---|
| 1 | Tesco Stores | £6.37 | see shop | – | in stock | new | https://pricuro.com/go/6031547 |
| 2 | Tooled Up | £3.49 | £5.95 | £9.44 | in stock | new | https://pricuro.com/go/3036439 |
| 3 | My Tool Shed | £3.49 | £5.95 | £9.44 | in stock | new | https://pricuro.com/go/57971628 |

## Price history (lowest price per day in United Kingdom, tracked since 2026-10-03, 12 days)

- Lowest price today: £3.49
- Last 30 days: lowest £3.24, highest £3.49, average £3.47
- All-time low on Pricuro: £3.24 (2026-10-03)
- Note: the history is still short, so it does not yet show whether today's price is a good one.

| Date | Lowest price |
|---|---|
| 2026-10-03 | £3.24 |
| 2026-10-04 | £3.49 |
| 2026-10-05 | £3.49 |
| 2026-10-06 | £3.49 |
| 2026-10-07 | £3.49 |
| 2026-10-08 | £3.49 |
| 2026-10-09 | £3.49 |
| 2026-10-10 | £3.49 |
| 2026-10-11 | £3.49 |
| 2026-10-12 | £3.49 |
| 2026-10-13 | £3.49 |
| 2026-10-14 | £3.49 |

## Specifications


Description (from a shop): The Irwin 4.2mm HSS Cobalt Drill Bit offers precise sizing for specialist applications in stainless steel and other high alloys. This diameter is particularly useful for clearance holes where exact sizing is critical, and for technical fabrication work in demanding materials. The 4.2mm size provides specific clearance requirements for particular fixings. The drill bit body is manufactured from premium HSS steel containing 5% Cobalt, which significantly enhances the red hardness (heat resistance) and results in extended service life. This Cobalt content allows the bit to maintain its cutting edge even under the demanding conditions encountered when drilling stainless steel and other challengi…

## Other variants

- [Irwin HSS Cobalt Drill Bit 3.2mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-cobalt-drill-bit-3-2mm-pack-of-1-944115.md) – from £2.49
- [Irwin HSS Cobalt Drill Bit 2mm Pack of 2](https://pricuro.com/uk/p/irwin-hss-cobalt-drill-bit-2mm-pack-of-2-944109.md) – from £1.95
- [Irwin HSS Cobalt Drill Bit 4.5mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-cobalt-drill-bit-4-5mm-pack-of-1-944122.md) – from £3.49
- [Irwin HSS Cobalt Drill Bit 4mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-cobalt-drill-bit-4mm-pack-of-1-944119.md) – from £2.95
- [Irwin HSS Cobalt Drill Bit 12mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-cobalt-drill-bit-12mm-pack-of-1-944146.md) – from £15.95
- [Irwin HSS Cobalt Drill Bit 1.5mm Pack of 2](https://pricuro.com/uk/p/irwin-hss-cobalt-drill-bit-1-5mm-pack-of-2-944107.md) – from £1.95
- [Irwin HSS Cobalt Drill Bit 3mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-cobalt-drill-bit-3mm-pack-of-1-944113.md) – from £2.49
- [Irwin HSS Cobalt Drill Bit 5mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-cobalt-drill-bit-5mm-pack-of-1-944124.md) – from £3.49
- [Irwin HSS Cobalt Drill Bit 6mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-cobalt-drill-bit-6mm-pack-of-1-944127.md) – from £4.95
- [Irwin HSS Cobalt Drill Bit 7mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-cobalt-drill-bit-7mm-pack-of-1-944131.md) – from £6.49
- [Irwin HSS Cobalt Drill Bit 8mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-cobalt-drill-bit-8mm-pack-of-1-944135.md) – from £7.95

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