General description 5pcs 5.0mm Professional Twist Drill Bits made from high-speed steel with 5% cobalt content, designed for precision and durability. These drill bits feature a 135° cross-ground and centered drill point for efficient drilling. Technical specifications Material: 5% cobalt high-speed steel Drill Point: 135° cross-ground and centered Hardness: HRC63-64 Size: 5.0mm Usage Ideal for drilling metals, stainless steel, cast iron, alloy steel, hard plastics, and wood. Recommended to use cutting oil for extended tool life. Other information