Features:Brand new and high quality.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.Shank features: Round shank.Size: 5/8"(wood plug 15.8mm).1/2"(wood plug 12.7mm).3/8"(wood plug 9.5mm).1/4"(wood plug 6.3mm).Uses: Suitable for bench drill Round shank.Package Included:8 x Wood plug cutter DrillsNO Retail Box. Packed Safely in Bubble Bag.