About this item This wood plug cutter drill bit set includes 4 standard plug cutters and 4 four-tooth chamfered cutters. 8 piece plug cutter set makes perfect plugs for counter-bored holes and the wood plug drill bit achieves excellent finish when using same timber. Bung cutter tool drill bit make tapered plug cutter to fill countersunk holes, use standard cutters to eliminate imperfections in wood. Shank diameter: 9.5mm/10mm; Total length: 45mm/50mm Plug cutters for wood, high carbon steel material