6 3-groove hexagonal conical drills of 6.35 mm: all have a 90 angle on the tip for a clear and precise milling. The sharp edge is soaked and sharpened for more sharpness. A five-pin blade designed with offset cutting teeth to ensure a free chip stream and a quick cut without chatting. 7 Tapered three-tune drills with L-key are made of high speed steel with Good resistance to abrasion and durable. Includes 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 10 mm for drilling driver holes. The large-groove drill and five edge chamfers allow faster and easier unloading of sawdust. Lot of 8 wood drills with 9.5 mm rod, made of durable carbon steel, used for conical dowels of 0.6 cm, 0.9 cm, 1.2 cm, 1.5 cm, 1.5 cm to cover the recessed screw holes or hide imperfections, capable of cutting knocks at 22 mm / 23 mm / 25 mm / 26 mm in length. 3 Lot of 3 HSS HSS HSS staped 6.35 mm, perfect for drilling holes in different materials: 3 mm (iron plate, copper plate, aluminum plate), 5 mm (wood, PVC sheet, insulation panels). Not suitable for hard and brittle materials such as stainless steel, glass, tile, walls, etc.