akptools Step Drill Bit HSS 4mm to 20mm 9 Step Titanium Coated Straight Flutes Hex Shank for Metal Wood Plastic 1 Pcs
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Step Drill Bits HSS 4-20mmTechnical ParametersTotal Length:75mmShank Type: Hex ShankShank Diameter: 6mm/0.23Drilling Diameters: [9 Steps]: 4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mmMaterial:High Speed SteelPackage Content1 x Step Drill Bits