[Specially designed] With these sharp drills, you can drill holes accurately, smoothly and neatly, even if there are particles and nodules at . The curved design head helps to remove sawdust faster and make your work more efficient. [Material] It has the advantages of high hardness, wear resistance, toughness, heat resistance and corrosion resistance. The handle is made of steel 45 . [Specification] Suitable for cutting holes in solid wood, cork, hardwood, plywood, medium density fiberboard, particleboard, plastic, rubber and glass fiber. It can be used in drilling press, bench drill, vertical drilling machine, CNC engraving machine, etc. [Caution] It contains sharp parts. Please keep from children and pets. 2. Do not use it for metal processing, otherwise the drill bit will be damaged soon. 3. The material must be fixed in the cutting process, and the drill bit should be perpendicular to the material. 4. Set the slow drilling speed until the drill bit is fully positioned, and then gradually accelerate the speed. 5. When processing hardwood, water should be injected to improve the drilling accuracy and quality. You will get five drills of 25mm, 28mm, 30mm, 32mm and 35mm. Colour:Silver Material:steel Size:25mm, 28mm, 30mm, 32mm and 35mm Package Contents: 1 * 25mm drill bit 1 * 28mm drill bit 1 * 30mm drill bit 1 * 32mm drill bit 1 * 35mm drill bit Only the above package content, other products are not included. Note: Light reflection 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.