The Bosch PRO HSS-G Twist Drill Bit in 4mm, supplied as a pack of 10, is one of the most widely used sizes for drilling in alloyed steel, cast iron, plastics, and wood. Ground from solid HSS for excellent durability, with a 135° split-point tip for accurate, no-pilot-hole-required starts. Features and Benefits: • Lasts up to 2x longer than a Bosch PointTeQ Drill Bit • 135° split-point tip for precise, no-wander hole starting • Ground from solid HSS for wear resistance and fast progress • Cylindrical shank fits standard three-jaw drill chucks Specifications: Diameter (D) mm: 4 Total length (L2) mm: 75 Working length (L1) mm: 43 Net Weight of the product: 0,080 KG Contents: • Pack of 10