【ใหม่】ชุดดอกสว่านเคาน์เตอร์ซิงค์ Hss สําหรับงานไม้ 5 ชิ้น

HSS Timber Woodworking Ti Countersink Drill Bit Set Screw Cutter Wood Tool For Metal Wood Alloy Counterbore Drilling Tool Countersink Drill Bit Set Made of high quality of alloy steel.It is very suitable for using to multi size wood hole drilling. One tool for multi uses,improve working efficiency. Product Feature MaterialAlloy steel coating,high strength, high toughness,to reduce friction, long life. DesignThis is a premium design that fully sharpened edge, sharp and durable,quick opening, easy to use,first-order length can be adjustable. Widely UsedSuitable for DIY, home and general building or engineering using,etc. Product Specification Size:2.8x8mm, 2.8x10mm, 3x8mm, 3x10mm, 3.2x8mm, 3.2x10mm, 3.5x8mm Color: orange silver Package Include: 5PCS Precautions: 1. Check the integrity of the hole opener before use, and clamp the hole inserter when loading the drill. 2. When working, the hole opener should be perpendicular to the workpiece. 3. After positioning, the propulsion force is slightly given during the drilling process. 4. When drilling, the rotation speed should not be too low, avoiding the blade being stuck and causing chipping. 5. Coolant should be added during the opening process to prevent damage caused by excessive temperature.