Description: This set includes 4 standard plug cutters and 4 four-tooth chamfered cutters. Chamfered cutters make tapered plugs to fill countersunk holes. Use standard cutters to eliminate imperfections in wood. 8 piece plug cutter set makes perfect plugs for counter-bored holes. The cutter set Achieves excellent finish when using same timber. Specification: Material: High Carbon Steel Color: Silver and black Shank Diameter: 10mm (3/8") Wood Plug Size : 6mm(1/4"), 10mm (3/8"), 13mm(1/2"), 16mm(5/8"). 6mm(1/4"): for taking wood within: diameter 6mm(1/4"), length 22mm(0.87"). 10mm(3/8"): for taking wood within: diameter 10mm(3/8"), length 23mm(0.91"). 13mm(1/2"): for taking wood within: diameter 13mm(1/2"), length 25mm(0.98"). 16mm(5/8"): for taking wood within: diameter 16mm(5/8"), length 26mm(1.02"). Package Includes: 8 Pieces of Wood Plug Cutter Drill Bit Tool