Dormer DOR1400 A170 HS 1/2in Parallel Shank Drill 14.00mm OL:156mm WL:83mm 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. Tip diameter: 14 mm HSS. Working length: 83mm. Overall length: 156mm.