Step drill bit HSS-TiN 4 - 12 mm, 6.0 mm, 65 mm. This drill bit is designed for efficient and precise drilling. It is made with HSS-TiN material for durability and extended tool life. The dimensions are 4-12mm, with a specific step of 6.0mm, and a total length of 65mm. EAN: 3165140107334, Weight: 0.055 pounds. Manufacturer: Bosch.