The scope of delivery is subject to the first picture, other pictures are the display effect Professional craft quality. Thick blades can be sharpened several times. Store easily between jobs. Help you quickly, very suitable for making clean flat bottom wood holes. Various package combinations, the specific delivery standard is: the first main picture. Made of cemented carbide, with long-lasting durability. Under the guidance of the circular edge, pierce all the arcs of the arc in all directions; ensure fast and correct waste disposal, make sure you have real, accurate and clean flat bottom holes and make sure 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 center gear of each bit ensures precise drilling and prevents walking and swinging during operation. The sun gear design 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 ball tips , drawers; wooden products, plastic products, wooden perforation and plywood. A variety of overlapping, tilting and woodworking punching, hinge holes, cylindrical holes, threaded holes for computer desks, easy drilling and domestication for fixing the wardrobe. Ideal for making flat bottom holes. Security: The drill bit must be used on the drill bit. The rotation speed of the machine must 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. Maximum number of turns: 6000 rpm Suitable for impact 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 bottom holes for quick waste disposal. In curved design, the nozzle can effectively remove debris and work efficiently. It is safer and more precise to use this drill in a drill press. Under the guidance of the circular edge, pierce all the arcs of the arc in all directions; ensure fast and accurate waste removal, ensure real, accurate and clean flat bottom holes and make sure your work is efficient. Packing List: Drill Bit Combination Tool (6pc Titanium Plated Countersunk Drill Bit If you have any questions, please feel free to contact us. Please allow slight deviation in the measurement data and make sure you do not mind before ordering. High quality store for you!