Spiral Step Drill 101096 RUKO

●Using high-grade material, stable drilling without burdening and chattering is possible.●Step Width (mm):4●Number of Stages (stage):9●Shank Diameter (mm):10●Drilling Dimension (?3mm):6, 9, 12, 16, 20, 22.5, 25, 28.5, 32●No Coating●High-Speed Steel