The Dormer Drill Bit is a jobber length drill with straight shank. It has diameter of 4.5 mm with an overall length of 80 mm and flute length of 47 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