Descripton: 6-30mm HSS Nitrogen Coated Spiral Grooved Step Drill Bit Specification: Material : High Speed Steel Surface : Nitrogen treatment (increasing the hardness and abrasion resistance) Color : Black (as picture shown) Shank Size: 25 x 10mm Size: 6-30mm 13 Steps: 6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm Scop : Thin iron plate,aluminum,insulation panels,PVC panels 4mm thickness within the timber. Quantity: 1pc Features: No need for a pilot hole. Automatically deburr holes as you drill. Widely used to cut holes in a variety of material like steel, wood, thin iron, aluminum alloy, insulation boards, PVC sheet,ect.. Package Included: 1 x Spiral Grooved Drill More Details:
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