Uxcell 8.5mm Twist Drill Bits High-Speed Steel Extra Long Drill Bit 250mm Length

Uxcell 8.5mm Twist Drill Bits High-Speed Steel Extra Long Drill Bit 250mm Length 1. Made of high-speed steel with high hardness heat resistance wear resistance durability and long service life. 2. The jobber extended drill is suitable for a wide range of applications allowing you to access hard-to-reach areas where ordinary drills cannot. High hardness sharp twist drill bits will make drilling easier and more efficient. 3. Split point tip and twist design increases cutting speed while easily self-centering to prevent movement. The twisted design of the drill bit quickly removes drilled chips then leaving a smooth hole. 4. Please keep it cool and gentle when using it the correct use can greatly extend the life of the twist drill. 5. For drilling on thin aluminum copper wood PCB board. Not suitable for concrete masonry and stainless steel.