Irwin
Irwin IRWIN® Bi-Metal High Speed Holesaw 21mm 10504166
Model 10504166
Best price
Lowest we’ve seenWhere to buy
| Retailer | Price | Availability | Visit |
|---|---|---|---|
| Cheapestchecked 23 hours ago | £7.58 | In stock | Visit Blueperry agriculture (UK) (opens in a new tab) |
 retailer's price from 16 Jul 2026 | £7.85 | In stock | Visit Blueperry Tool & Builders Merchants (UK) (opens in a new tab) |
 checked within the hour | £8.95£10.55 | In stock | Visit Tooled Up (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 21mm IRWIN Bi-Metal Hole Saw is sized for plumbing and heating work, particularly radiator valves and small bore pipework, and is also suited to general construction, electrical installation and remodelling tasks. Its bi-metal construction with electron beam welded teeth is built for durability under regular trade use.
The variable tooth design (4-6 pitch) gives a faster, cleaner cutting action across a range of materials, including aluminium, copper, iron, stainless steel, wood and zinc. It forms part of IRWIN's wider hole saw range, which spans from 14mm to 152mm and includes compatible arbors and pilot drills.
Features and Benefits
- :
- 21mm diameter ideal for radiator valves and pipework
- Bi-metal construction provides exceptional durability
- Variable tooth pitch (4-6) ensures fast, clean cuts
- Electron beam welded teeth offer superior strength
- Cuts diverse materials including copper, iron and wood
- Professional quality built for trade applications Specifications: Size (mm): 21 Material: Bi-Metal Pitch: Variable
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