[HOW TO USE]Thimble positioning, grip the handle and press hard along the direction of punching. When the thimble is pressed into the handle, then the "DUANG" sounds, and the internal spring ejects the thimble, it can be completed.[Recommended use] The chamfering tools are suitable for bench and hand drills, we recommend the use of bench drills for more stable operation and improved work efficiency.[High-quality material]The cutter bit tools with smooth surface are made of high-quality carbon steel, precision-manufactured, high-strength, sturdy and durable, and corrosion-resistant.[Wide application]This woodworking chamfering tools set is used for drilling hole on wood, which is very easy to operate. You need to be careful during use.Colour:Golden + silver + blackMaterial:Hard alloy + high-speed steel + carbon steelSize:130mmPackage Contents:8 x cork drills (1/4 inch, 3/8 inch, 1/2 inch, 5/8 inch,6.3mm, 9.5mm, 12.7mm, 15.8mm)4 x countersunk drills (3mm/4mm/5mm/6mm)1 x wrench1 x Automatic center punchOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.