Hocansen 3 Pcs/Set High Speed Steel Titanium Coated Step Drill Bit Hex Shank Cone Gold Spiral Grooved for Plastic, Wood Drilling Hole（4 12mm/20mm/32mm）

Multi Size Hole Stepped Up Bits HSS Titanium Coated Step Drill Bit Hex Shank Cone Drill use for Drilling Hole Material: Step drill bits made of HSS with titanium coating for strength and speed in cutting and drilling. Size: 4-12mm, 4-20mm, 4-32mm. Quantity: 3 Pieces;Colour: Gold. Applications: Step drills with hexagonal shanks are suitable for cutting, reaming and opening holes in wood, thin iron, aluminum, copper, PVC, plastic, fiberglass, gypsum board and other materials. Each step is marked with the diameter of the opening on the step for ease of use.