ITEM NAME:8 pcs 5/8in 1/2in 3/8in 1/4in Wood Plug Cutter Tool Drill Bits Set + 6PCS 1 Q8M2 8 pcs 5/8in 1/2in 3/8in 1/4in Wood Plug Cutter Tool Drill Bits Set + 6PCS 1 Q8M2 Steel material, titanium-coated for extended working life .Chamfered cutters make tapered plugs to fill countersunk holes. 6PCS 1/4inch Hex Shank HSS 5 Flute Countersink Drill Bit Set, Great for Sinking 90 Degree Holes into Wood and Soft Metals Countersunk Screws and Fixings. Size includes - 6mm(1/4inch), 8mm(5/16inch), 9mm(3/8inch), 12mm(1/2inch), 16mm(5/8inch), 19mm(3/4inch), handle diameter: 1/4 inch. Tubular and Tapered Claw Sizes: 1/4inch,3/8inch,1/2inch,5/8inch (6mm/10mm/13mm/16mm) Chamfered Cutters Make Tapered plugs To Fill Countersunk Holes. Use Standard Cutters To Eliminate Imperfections In Wood. The Cutter set Achieves excellent finish when using same timber. Hardness: 50 HRC Polished cutting edge for reduced friction. Perfect for DIY, home and general building/engineering using. High hardness and sharp, perfect for drilling the extra thick wood. colour: Gold + silver Material: High speed steel Package Contents: 4 * Straight Drill Bit Cutter. 4 * Tapered Claw Drill Bit Cutter. 6 * 5 Flute Countersink Drill Bit.