Uxcell 10Pack 0.35mm HSS(High Speed Steel) W6542 Drill Bits Fully Ground Jobber 20mm Length Drill Bit

Uxcell 10Pack 0.35mm HSS(High Speed Steel) W6542 Drill Bits Fully Ground Jobber 20mm Length Drill Bit 1. Made of high-speed steel with high hardness heat resistance wear resistance durability and long service life. 2. The fully ground flute design reduces friction and heat and increases drilling performance.br>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 Mild Steel Copper Aluminum wood PCB board. Not suitable for concrete masonry and stainless steel.