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: 45# Carbon Steel Color: As The Picture Shows Size: As The Picture Shows Wood Plug Size : 6mm(1/4 Inch),10mm (3/8 Inch),13mm(1/2 Inch),16mm(5/8 Inch) Shank Diameter:10MM/ 3/8 Inch 1/4: you can take wood diameter 6mm,you can take the wood within 22mm 3/8: you can take wood diameter 10mm,you can take the wood within 23mm 1/2: you can take wood diameter 13mm,you can take the wood within 25mm 5/8: you can take wood diameter 16mm,you can take the wood within 26mm Package Includes: 8 Pieces Wood Plug Cutter Drills Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you