# Irwin HSS TCT Drill Bit 4mm Pack of 1

> Price comparison in United Kingdom (GBP). Lowest price right now: **£13.95** at Tooled Up plus £5.95 delivery, in stock. 2 offers from 1 shop, prices from £13.95 to £13.95. Checked 2026-10-15T02:21:43Z.

## Product
- Brand: IRWIN®
- Category: [Home & garden](https://pricuro.com/uk/home-garden.md) > [Tools](https://pricuro.com/uk/home-garden/tools.md)
- EAN/GTIN: 5709131042907
- Manufacturer part number: 10502631
- Page: https://pricuro.com/uk/p/irwin-hss-tct-drill-bit-4mm-pack-of-1-943940
- Image: https://pricuro.com/img/943940/800/irwin-hss-tct-drill-bit-4mm-pack-of-1.webp

## Offers (2, sorted by total price incl. delivery; used/refurbished last)

| # | Shop | Price | Delivery | Total | Availability | Condition | Buy |
|---|---|---|---|---|---|---|---|
| 1 | Tooled Up | £13.95 | £5.95 | £19.90 | in stock | new | https://pricuro.com/go/3009265 |
| 2 | My Tool Shed | £13.95 | £5.95 | £19.90 | in stock | new | https://pricuro.com/go/57977027 |

## Price history (lowest price per day in United Kingdom, tracked since 2026-10-03, 13 days)

- Lowest price today: £13.95
- Last 30 days: lowest £13.95, highest £13.95, average £13.95
- All-time low on Pricuro: £13.95 (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 | £13.95 |
| 2026-10-04 | £13.95 |
| 2026-10-05 | £13.95 |
| 2026-10-06 | £13.95 |
| 2026-10-07 | £13.95 |
| 2026-10-08 | £13.95 |
| 2026-10-09 | £13.95 |
| 2026-10-10 | £13.95 |
| 2026-10-11 | £13.95 |
| 2026-10-12 | £13.95 |
| 2026-10-13 | £13.95 |
| 2026-10-14 | £13.95 |
| 2026-10-15 | £13.95 |

## Specifications


Description (from a shop): This 4mm Irwin HSS TCT drill bit is an essential size for workshop and industrial applications involving hardened materials. The 4mm diameter is widely used across engineering, maintenance, and fabrication tasks where robust drilling performance is required in challenging materials. Featuring a tungsten carbide tip, this drill bit is specifically designed to penetrate hardened steel, cast iron, bronze alloys, and manganese alloyed steel up to 50 Rockwell C hardness. The four-facetted ground tip ensures excellent centring from initial contact and reduces the drilling pressure required, which helps prevent tool deflection and produces cleaner holes. The Chrome Vanadium Steel body, hardened to…

## Other variants

- [Irwin HSS TCT Drill Bit 14mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-tct-drill-bit-14mm-pack-of-1-943957.md) – from £38.35
- [Irwin HSS TCT Drill Bit 4.5mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-tct-drill-bit-4-5mm-pack-of-1-943941.md) – from £13.79
- [Irwin HSS TCT Drill Bit 5mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-tct-drill-bit-5mm-pack-of-1-943942.md) – from £13.79
- [Irwin HSS TCT Drill Bit 3mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-tct-drill-bit-3mm-pack-of-1-943938.md) – from £13.95
- [Irwin HSS TCT Drill Bit 6mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-tct-drill-bit-6mm-pack-of-1-943944.md) – from £13.95
- [Irwin HSS TCT Drill Bit 7mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-tct-drill-bit-7mm-pack-of-1-943946.md) – from £15.95
- [Irwin HSS TCT Drill Bit 8mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-tct-drill-bit-8mm-pack-of-1-943948.md) – from £18.95
- [Irwin HSS TCT Drill Bit 9mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-tct-drill-bit-9mm-pack-of-1-943949.md) – from £19.95
- [Irwin HSS TCT Drill Bit 11mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-tct-drill-bit-11mm-pack-of-1-943953.md) – from £25.45
- [Irwin HSS TCT Drill Bit 12mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-tct-drill-bit-12mm-pack-of-1-943955.md) – from £29.21
- [Irwin HSS TCT Drill Bit 5.5mm Pack of 1](https://pricuro.com/uk/p/irwin-hss-tct-drill-bit-5-5mm-pack-of-1-943943.md) – from £13.95

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