Description: 5pcs 1\/4 Inch Hex Shank Twist Drill Bits 4-10mm Screwdriver Bits Woodworking Tool Specification: Material: High Carbon Steel Shank Diameter: 1\/4" \/6.53mm Drill Bit Size: 4.0mm, 5.0mm, 6.0mm, 8.0mm, 10.0mm Length in set: Approx.95mm, 103mm, 108mm, 130mm, 140mm Quantity: 5pcs Features: -1\/4" (6.35mm)Hex Shank fits 1\/4" Hex cordless screwdrivers. -High hardness, rustproof, solid and durable. -Fast replacement composite cone, uses drill edged principle. -460mm length, branch Luo drill, woodworking drill, drill hole punch. -A practical model relates to the variety of wood drill bit for drilling through-holes. -Tip portion has a reasonable structure design, smooth brisk drilling, high efficiency, after the drill hole wall smooth and unobstructed chip advantages. -It is suitable for useing on wood, in the use of the drill bit will self drilling wood, very labor-saving. -Clamping more stable, easier to replace. Suitable for clamping electric screwdriver can handle 1\/4 hex power tool. Package Included: 5 x Twist Drill Bits More Details: