4-12/20/32mm HSS Hex Shank Step Drill Bit High Step Steel Hole Cutter

Specification:  Material: High speed steel;  Suitable for workpieces with a hardness of 25° or less, such as carbon steel;  Cutting material: thin iron plate, aluminum material, insulating board, PVC board wood, thickness within 4mm.     Features:  Two flute design provides faster, smoother and cleaner cuts.  Perfect for home DIY and general building / engineering use.  Suitable for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc.     Package Included:  1 x Step Drill