8pcs 5/8" 1/2" 3/8" 1/4" HSS Taper Claw Type Wood Plug Cutter Drill Bits This set includes 4 standard plug cutters and 4 four-tooth chamfered cutters Chamfered cutters make tapered plugs to fill countersunk holes. Size:1/2'',5/8'',3/8'',1/4'',Shank Diameter:9.5mm Material:Carbon Steel