15Pcs High Speed Steel Hand Drill Bits Hex Shank Twist Drill Bits for Woodworking Hand Tools Tool 3/ 4/5mm Hot Sale Features: Twist drill bits are made of high speed steel with high hardness and strength. The surface of the drill bit is coated with black oxide, to add mild corrosion resistance. There are 15pcs drill bit in three sizes 3.0mm, 4.0mm, 5.0mm, five pieces for each size. They are ideal for most drilling work and materials such as aluminum alloy, iron, wood, plastics. Sharp twisted drill bits will make drilling easier and easier. Specifications: Material: High Speed Steel Surface Finish: Black Oxide Type: Twist Drill Bit Size: 3.0mm, 4.0mm, 5.0mm Quantity: 5pcs Each Size Hex Shank Diameter: 7mm Package Included: 15pcs x Drill Bits 1) we accept Alipay, West Union, TT. All major credit cards are accepted through the payment processor's secure escrow. 2) Payment must be made within 3 days of placing the order. 3) If you can't bring back immediately after the auction ends, please wait for a few minutes and try again, the payment must be completed within 3 days. About Shipping 1.