uxcell Auger Drill Bit Wood Hex Shank 6mm Cutting Dia High Carbon Steel for Electric Bench Drill Woodworking Carpentry [Cutting Dia.]: 6mm/0.2 inch; [Shank Width]: 5.5mm/0.2 inch; [Drill Depth]: 11.5cm/4.5 inch; [Total Length]: 23cm/9 inch [Hex Shank]: Avoid the bit sliding off collet. [Broad Blades]: Keep the drill bit straight as it bores. [Hollow Center Flutes]: Clear chips quickly out of holes, creating deep holes quickly and cleanly. [Self-Guide Direct Thread]: Make it easier, faster and more accurate when drilling in the hard/soft wood. [NOTE]: Please do NOT apply this kind of auger drill bits to metalwork like reinforcement bars.