6 1/4" 5 Flute Hex Cone Drill Bits: All have a 90 angle on the tip for clean, precise countersinking. The cutting edge is hardened and honed for sharpness. A five-flute blade designed with offset cutting teeth to ensure free chip flow and fast, chatter-free cutting. 7 tri-point cone drill bits with L-key are made from high-speed steel with good abrasion resistance and durable. Includes 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm for drilling pilot holes. The large flute bit and five edge chamfers allow for faster and easier sawdust discharge. 8-piece wood drill bit set with 9.5mm shank, made of durable carbon steel, Used for 0.6cm, 0.9cm, 1.2cm, 1.5cm, 1.5cm tapered plugs to cover recessed screw holes or hide imperfections, capable of cutting plugs to 22mm /23mm/25mm/26mm in length. 3pcs 6.35mm Hex Shank HSS Step Drill Bit, perfect for drilling holes in different materials: 3mm (iron plate, copper plate, aluminum plate), 5mm (wood, PVC sheet, insulation boards). Not suitable for hard and brittle materials such as stainless steel, glass, tiles, walls, etc. Delivery quantity: 26 piece