HSS Step Drill

一123一 HSS Step Drill Step drills are made of solid high speed steel or M2 steel, and millded by turning machine. A range of hole diameters can be drilled using only one tool and holes are deburred automatically by the following step. Product Description HSS step drill bit. 1. Spiral grooved; 2. Surface without discoloration 3. Right hand cutting; 4. Point thinning according to DIN1412 C; 5.118 point angle; 6. High performance steel. 7.90 point stepped angle; 8. Absolute