Drill BitSpecifications:Full GroundedTWIST DRILL BIT STUBHSS (HIGH-SPEED STEEL)GERMAN QUALITYSIZE -0.5, 0.8, 1, 1.5, 2.79, 2, 3.5,, 3.9, 3, 5mm
High-speed steel (HSS) is a form of tool steel; HSS bits are hard and much more resistant to heat than high-carbon..