Cobalt Drill Bit Set 29 Pcs M35 High Speed Steel Cobalt Drill Bits Storage Case 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