Cutting Head:: 13 mm (1/2 in) x 90 degrees Shank Diameter:: 6 mm (1/4 in)
Features: Precision ground high speed steel countersink. Cutting head 13 mm (1/2 in) x 90 degrees. Shank diameter 6 mm (1/4). ideal to be used on wood, mild steel, aluminium & other non-ferrous metals.