Feature●Step Drill Size: 6-60mm (12 steps: 6,10,15,20,25,30,35,40,45,50,55,60mm) Shank Diameter:13mm●Step drill material: HSS 4241 high hardness.●Application: The step is suitable for workpieces with a hardness below 25° workpieces, such as carbon steel, sheet iron, insulation boards, PVC planks, and wood. Workpiece thickness less than 5 mm.●Note: use water cooling when drilling to extend the life of the bit. Recommended drilling speed 250-400 rpm.●Spiral Groove Cut Flute:135 split point tip and double fluted design for self centering and deburring, spiral groove helps remove chips when drilling.Description
Step drill 6-60 mm suitable for workpieces with a hardness below 25° workpiece, such as carbon steel, sheet metal, insulation boards, PVC planks, and wood. Workpiece thickness less than 5 mm.