VEVOR Cobalt Drill Bit Set, 29 Pcs, M35 High Speed Steel Cobalt Drill Bits with Storage Case, for Drilling Metal, Stainless Steel, Aluminum Alloy, Wood, Plastic, for Professional Work and Home DIY Durable Construction 135° Split Point & Twisted Design Wide Range of Sizes Versatile Applications Proper Usage Tips Compatible with Multiple Drill Types Bit Type: Split Point Bits,Item Model Number: SSHYMHZ29,Surface Treatment: Yellow-Baked Finish,Point Angle: 135° ±1°,Hardness: HRC 65–70,Main Material: M35