A321 - 10.3mm Dormer Three-Flat Shank HSS Drills, Steam and Bronze Tempered Surface Finish (Pack of 5)

Heavy duty design drill with three-flat shanks for medium depth holes. Diameter 10,3 mm with an overall length of 113 mm. Primarily suited for hand-held operations and pillar drill machines. Three flats on the shank allow for non-slip chucking. The self centering 135° split point reduces thrust force and the steam and bronze tempered surface finish improves lubricity. Suitable for drilling primarily in wide range of thin walled materials.