Tip diameter: 21.0 mm HSS.
Working length: 84mm.
Overall length: 157mm.
Dormer A170 Parallel shank drills with a standard helix, right hand spiral, 1/2in parallel shank drill, often referred to as a Blacksmiths drill.
General purpose drill, ideal for a wide range of materials where chuck holding capacity is limited.
Suitable for both hand and machine use.