The Dormer Drill Bit is a jobber length drill with straight shank. It has diameter of 3.5 mm with an overall length of 70 mm and flute length of 39 mm according to DIN 338 standard. This bits has 118 degree conventional point angle and HSS with steam tempered finish for 4xD drilling without pecking in steel. The steam tempered finish retains cutting fluid and prevents chip tool welding.
Very cost effective Suitable for many materials Great and versatile all around drill Provide strength and is easy to regrind Suitable for both hand and machine use
