Spiral Step Drill 101053 RUKO

●Using high-grade material, stable drilling without burdening and chattering is possible.●Step Width (mm):4●Number of Stages (stage):12●Shank Diameter (mm):10●Drilling Dimension (?3mm):6, 9, 13, 16, 19, 21, 23, 26, 29, 32, 35, 38●No Coating●High-Speed Steel