MILWAUKEE 48899320 4 TO 20MM STEP DRILL BIT

Step drills are ideal for drilling into the following materials: - Ferrous & non-ferrous sheets metals, profiles and pipes. - Copper, brass and aluminium. - Stainless steel. - Plastics. - Maximum material thickness 4 mm. - To ensure best lifetime we recommend the use of a coolant. Spot drill - Drill - Debur - All in one go.Rapid Strike tip for improved centering - less walking and fast drilling without the need to punch or pre drill the material. Special tip and step geometry for jam-free performance - less risk of drill snagging when used with high speed cordless tools and also prevents deformation of the drilled material. Optimised 2 flute ground sharpened edge geometry for 2 x faster and smoother cutting. Produced from custom engineered steel with black oxide coating for 4 x longer life. Optimised for use with high speed cordless drills. Laser engraved size markings for best long term visibility. Each step is relief ground to drill and deburr automatically.