5-35mm HSS Large Cobalt Hole Titanium Cone Step Drill Bit Tools

CASTA. No need for a pilot hole. Titanium coated to reduce friction and run cooler. Automatically deburr holes as you drill. High speed steel, durable. Widely used to cut holes in a variety of material like steel, wood, thin iron, aluminum alloy, insulation boards, PVC sheet, ect. Specification: Color: Silver. Material: High Speed Steel. Surface: Nitrogen treatment increasing the hardness and abrasion resistance). Shank: Triangle round handle. Scop: thin iron plate, aluminum, insulation panels, PVC panels 4mm thickness within the timber. Type: 5-35mm(5,7, 10,12,15,17,20,22,25,27,30,32,35mm), Shank: 23 x 13mm. Total Size: 35 x 72mm. Package included: 1 x 5-35mm Spiral Grooved Drill