- This durable and versatile tool will center, spot-drill, bore and debur-all in one smooth, high performance working cycle
- Drilling range in 5 steps: 7/8″, 1-1/8″, 1-7/32″, 1-1/4″, 1-3/8″
- The RUKO Step Drill spiral flute is ground from the solid hardened form, a better and sharper cutting edge is achieved-without burrs
- Optimized chip flow protects the cutting edges and reduces cold weld marks, cutting performance and tool life is extended significantly
- With split point, Co5 cobalt alloy, ideal for high-alloyed chromium steel such as stainless and acid resistant steel
