Hammers, Chisels, Breakers -10pieces High Speed Steel Drill Bit Metal Twist Shank Drill Bit 1.8mm Highlights Generic Brand 10pieces High Speed Steel Drill Bit Metal Twist Shank Drill Bit 1.8mm Description: Made of high speed steel for capacity and proven durability. Twist Design: Increases cutting speed with self-centering and prevents walking, removes chips and particles faster Suitable for all types of stainless steel, carbon steel, angle iron, aluminum, copper, wood and other materials. For precision drilling, electronics assembly, tool making, model making, jewelry engraving and hobbies. Size: 1.3mm, 1.5mm, 1.8mm, 2.0mm specification: Material: high speed steel Package includes: 10pcs twist drill bits