Description Professional artisanal quality. Thick blades can be sharpened several times. Easily store between work. You will help quickly, very suitable for making clean flat wooden holes. Various combinations of parcels, the specific delivery standard is: the first main image. Made in cemented carbide, with durable durability. Under the direction of the circular edge, perceive all arc arcs in all directions; Ensure quick and correct disposal of waste, make sure you have real, accurate and clean flat bottom holes and make sure your job is effective. The PTFE coating of the valve body prevents the adhesion of the chips, resin and residues. Provides visibility and stability during operation. The central gear of each drill ensures precise drilling and prevents walking and swinging during operation. The design of solar gear can perfectly form a round and precise hole. Suitable for column drills, percussion drills, established drills, vertical drills, portable electric drills, column drills and movable installation drawers pierced with spherical spikes , drawers; Wooden products, plastic products, wood perforation and plywood. A variety of overlapping, tilt and perforation of wood, hinge holes, cylindrical holes, threaded holes for computer offices, drilling and easy domestication for fixing the wardrobe. Ideal for making flat bottom holes. Security: the drill must be used on the drill. The speed of rotation 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: every fixed fixed drill. Maximum number of tricks: 6000 rpm Suitable for percussion drills, established drills, portable electric drills for vertical drills, vertical electric drills and magnetic moving belt drills. Good resistance to shocks and tenacity. precise and clean flat bottom holes for rapid disposal of waste. In curved design, the nozzle can efficiently eliminate debris and operate effectively. It is safer and more precise to use this drill in a column drill. under the direction of the circular edge, all arc arcs in all directions; Ensure fast and accurate disposal of waste, provide real, accurate and clean flat bottom holes and make sure your job is effective. Delivery quantity: 5pcs, Package content: only the above package content, excluding other products. Size: 70.662.160.355.847.8mm Bit diameter: 3.48, 3, 2.8,2.35,2mm (Warm prompt: the size is measured manually, please allow 1-2 cm measurement error) Color:black (Due to different displays and lighting effects, the actual color of the product may be slightly different from the color shown in the picture.)