DRILLING, HSS drills, Solid round toolsRolled Black Yellow Twist Drill High Speed Steel Straight Shank Twist Drill
Availability:
200 in stock
- The head is specially sharpened to cut iron like mud.
- Large thread groove design, good chip removal performance, fast drilling speed, improve work efficiency.
- The design of 135°drill point with double relief angle is convenient for drilling positioning and high-speed operation, wear resistance, and the cutting head is sharper.
- Using roasted yellowing process. The high-speed steel is integrally formed, the overall heat treatment, and the quenching hardness is stable.
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