Professional quality craftsmanship. Thick blades can be sharpened multiple times. Easily store between jobs. Help you quickly, very suitable for making clean flat-bottomed wooden holes. Various package combinations, the specific delivery standard is: the first main picture.Made of cemented carbide, with long lasting durability. Under the direction of the circular edge, drill all the arcs of the arc in all directions; ensure fast and correct disposal of waste, ensure you have real, precise and clean flat-bottomed holes and ensure that your work is efficient. The PTFE coating of the valve body prevents the adhesion of chips, resin and residue.Provides visibility and stability during operation. The central gear of each bit ensures precise drilling and prevents walking and rocking during operation. The design of the sun gear can perfectly form a round and precise hole.Suitable for drill presses, impact drills, bench drills, vertical drills, portable electric drills, drill presses and mobile installation drawers drilled with spherical tips, drawers; wood products, plastic products, wood perforation and plywood.A variety of woodworking overlapping, tilting and punching, hinge holes, cylindrical holes, threaded holes for computer desks, easy drilling and domestication for cabinet fixing. Ideal for making flat-bottomed holes.Security:The drill must be used on the drill.The rotation speed of the machine should be between 1200 and 6000 rpm.Do not use it on the router (the speed is too high).Compatible machine type:Each fixed drill bit sets.Maximum number of rounds: 6000 rpmSuitable for hammer drills, bench drills, portable electric drills for vertical drills, vertical electric drills and moving belt magnetic drills.Good impact resistance and toughness.Precise and clean flat-bottomed holes for quick waste disposal.In the curved design, the nozzle can effectively remove debris and work efficiently.It is safer and more accurate to use this drill in a drill press.Under the direction of the circular edge, drill all the arcs of the arc in all directions; ensure fast and accurate waste disposal, ensure real, precise and clean flat-bottomed holes and ensure that your work is efficient.Packing list: Drill Bit Combination Tool (8 Cork Drill Bits + 6 Titanium Plated PiecesIf you have any questions, please feel free to contact us.