Drillpro 3Pcs 3-12/4-12/4-20mm HSS Titanium Coated Step Drill Bits with Automatic Center Pin Punch

Description Drillpro 3Pcs 3 12 4 12 4 20mm HSS Titanium Coated Step Drill Bits with Automatic Center Pin PunchSpecification 3 12 4 12 4 20mm Step Drill Bits Brand DrillproMaterial HSS High Speed SteelSurface Treatment Titanium CoatedShank Size 1 4 Hex ShankIncludes a five step bit nine step bit and ten step bit Quantity 3pcs The 3 Cutters Come in the Following Sizes 4 12mm 4mm 6mm 8mm 10mm 12mm4 20mm 4mm 6mm 8mm 10mm 12mm 14mm 16mm 18mm 20mm3 12mm 3mm 4mm 5mm 6mm 7mm 8mm 9mm 10mm 11mm 12mmCenter Punch Brand DrillproGeneral type 6mm automatic center pin punchMaterial Bit material hss steelMain body material tool steelTotal Length Approx 128mmBit diameter 6mmFeatures 1 Including 1pcs center punch and 3pcs step drill 2 Can use step drill to open hole before using the center punch 3 It is very suitable for using to cut holes in a variety of materials including steel brass wood plastic etc4 Adjustable automatic center punch Package Included 1 x Center Punch3 x Step Drill BitsMore Details