KEWAYO 6-Piece Wood Drill Bits, Wood Drill Spade for Woodworking, Multifunction Hex Shank Drill Bit Tool Set

All KEWAYO wood bits set with cutting spurs for optimum hole finish, a hang hole for bit storage & wire pulling, full length heat treat for longer life, flats on shank to prevent slipping in chuck, 1/4-inch Quick Change shank which fits all drills, and 1/4-inch quick change holders.Suitable for joists, joinery, carpentry, cabinet making and wood. The hex handle can be quickly replaced with a groove to reduce slippage, prevent falling off and be safe. Material: High Carbon Steel Shaft Diameter: 1/4'' Sizes: 10mm 12mm 16mm 18mm 20mm 25mm Package included: 6 x Drill Bits Warm Tips: 1. Recommended hand drill or 24V / 48V cordless drill instead of 12V because of low power. 2. Please keep cool and gentle using, the working life of the wood drill bits can be largely prolonged by proper usage. 3. Adjust the speed when in use. If the speed too fast, the drill bit will be damaged. 4. Please keep the drill vertical and fixation while drilling. 5. Please do not use these bits on hard metal such as reinforcing steel bar, hardened steel, high carbon steel or heat treated steel etc.