7+1PCS Different Woodworking Drill Bits of 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm and a hex wrench. You can use the hex key to loosen and tighten the screw and adjust the length of the cutter. it also can use for disassembly and installation of drill bitsHSS Steel Our wood drill bits are made of HSS steel, forming a strong and sharp countersunk hole, with high hardness and good resistance to wear and heat, which can be cut in all directions to ensure accurate and clean flat-bottomed holesTricuspid centering; Five Edge Chamfer Three point countersink ensure the drill bits will not produce offset, no slipping, good for precise and fast drilling. Five-edged chamfer design of the countersink drill bit clears wood and debris more quickly and automaticallyApplication for drawer ball point mounting; punching wood products, plastic products, wood and plywoodUse with Power Tools Suitable for drill press, hammer drill, bench drill, vertical drill, drill press column or portable and mobile band drillTricuspid centering;L-keyChamfer with Five EdgesThe milling cutter tri-point cutter ensures that the drill bits do not shift and are not easy to slip, which is good for accurate and fast drillingThree-point cutter ensures the drill bits do not shift and are not easy to slip, which is good for precise and fast drillingthe hex wrench is for loosening and tightening the screw and adjusting the length of the cutter. It can also use for disassembly and installation of drill bitsFive-edged chamfer design of the countersink bit can clear wood and debris more quickly and automaticallyMaterial: Package Included:7* Forest Wood Cutter1* L-shaped Hex KeyNote: The data is manual measurement, please allow 1-3cm error, due to differences between light and screen, there will be a certain color difference, the specific received in kind prevail.