Spiral Step Drill 101052H RUKO

●Using high-grade material, stable drilling without burdening and chattering is possible.●Step Width (mm):4●Number of Stages (stage):14●Shank Diameter (mm):6.35 hexagonal shaft●Drilling Dimension (?3mm):4, 6, 8, 10, 12, 14, 16, 18, 20, 24, 26, 28, 30●No Coating●High-Speed Steel