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: