Wood Drill Bit Sets, Lily's Gift 5 Pcs Impact Tough Drill Bit High Carbon Steel Drill Bit 4mm-10mm, Quick Change, 1/4" Hex Shank, for Woodworking Wood Tools Equipped with quick-change hex shank, clamping is more stable, easier to replace All drill bits come with the 1/4" hex shanks to fit into your drill we produce our products from the best materials possible and at the best cost to ensure you are getting a real value for money offering. Set for sale Material: high carbon steel