Spiral Step Drill 101702 RUKO

●Using high-grade material, stable drilling without burdening and chattering is possible.●Work material: Iron plate(strength of 900N/[[MM2]] or less), brass, aluminum, plastic(up to 4mm)●Step Width (mm):4●Number of Stages (stage):13●Shank Diameter:1/4●Drilling dimension:1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 19/32, 3/16, 15/32, 1/2●No Coating●High-Speed Steel