Dormer A1105.5-10 HSS Long Series Drill Bits with a steam tempered finish The Dormer A1105.5-10 is a pack of 10 HSS High-Speed Steel Long Series Drill Bits with a straight shank. The diameter is 5.5mm with an overall length of 139mm and flute length of 91mm according to DIN 340 standard with 118° point angle. HSS with steam tempered finish for 6xD drilling without pecking in steel. Can be used in many different applications both handheld and machines for drilling many materials including steels, aluminium, stainless steel, cast iron and non-ferrous metals. Features: Steam oxide finish Long length series Premium HSS material 118-degree conventional point   Providing a strong point that is easy to re-grind Prevents workpiece material from sticking to the cutting edge Recommended for drilling deeper holes/applications where increased reach is required Specification: Pack of 10 Cutting Length: 91mm Head Diameter: 5.5mm Overall Length: 139mm