Step Drill 4 - 12mm X 1mm Spiral Flute Hss Tin-co

Description

Alpha Step Drills replace individual drills offering a wide range of sizes in a single drill. Made in Germany. Manufactured from Premium HSS raw material, and TiN Coated for reduced heat and long life. Ideal for drilling thin materials such as stainless steel, copper, brass, aluminium, plastic and laminates. Variable spiral flute for faster, precise hole drilling. Self-starting tip to prevent drill wandering. Drilling and deburring in the one process. Laser marked diameters that will not wear off with use. 3 flats on shank to prevent slipping in chuck. No of Steps: 9 Step Sizes: 4, 5, 6, 7, 8, 9, 10, 11, 12mm Cutting Depth: 4mm Shank Dia: 6.0mm Shank Type: 3 Flats Recommended Cutting Speeds: Steel 500 - 1500 rpm