Bosch - 3.8mm Cyl-9 Multi Construction Drill Bit Carbide Multi Construction Drills 3mm manufactured from fine grain durable carbide. Features: - Diamond ground cutting edges - Four spiral dura design - Special slot for multi-function drilling Specifications: - Material: Metal - Colour: Grey - Dimensions: 60 x 35 x 10cm - Weight: 0.01kg - Warranty: Based On Manufactures Defects What's in the box x 1 Drill Bit