HSS Dormer Drill Bits
1mm
£1.84 inc VAT
£1.53 ex VAT
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HSS Dormer Drill Bits
AT30301
£1.84 inc VAT
£1.53 ex VAT
Free UK delivery on orders over £100
Usually dispatched within 1–2 working days
Secure checkout · 30-day returns
How to measure?
Measure the Outside Diameter (OD)
Pipe insulation sizes refer to the outside diameter of the pipe — not the bore (internal diameter).
Wrap a tape measure around the pipe, divide by π (3.14) to get the OD. Or use calipers across the outside of the pipe directly.
Pipe insulation sizes refer to the outside diameter of the pipe — not the bore (internal diameter).
|←— OD —→|Wrap a tape measure around the pipe, divide by π (3.14) to get the OD. Or use calipers across the outside of the pipe directly.
HSS Dormer Drill Bits
High speed steel drill bits for general drilling applications. Choose the required drill diameter from the size options.
- High speed steel (HSS)
- Hardened steel and heat resistant
- Suitable for metal, plastic and hardwood
- Ideal for general installation and maintenance work
- Available in a range of drill sizes
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