3pcs Hss Steel Titanium Step Drill Bits 3-12mm 4-12mm 4-20mm Step Cone Cutting Tools Steel Woodworking Wood Metal Drilling Set HJDIPCKYVG

HJDIPCKYVGSpecification: Material: HSS 1/4'' Hex Shank Sizes: (approx.)3-12mm:3, 4, 5, 6, 7, 8, 9, 10, 11, 12 mm/ 0.12, 0.16, 0.20, 0.24, 0.28, 0.31, 0.35, 0.39, 0.43, 0.47 in4-12mm:4, 6, 8, 10, 12 mm/ 0.16, 0.24, 0.31, 0.39, 0.47 in4-20mm:4, 6, 8, 10, 12, 14, 16, 18, 20 mm/ 0.16, 0.24, 0.31, 0.39, 0.47, 0.55, 0.63, 0.71, 0.79 in4241 High-Speed Steel HSS (Suitable For Use In The Workpieces Whose Hardness Is 25 Degrees Such As Carbon Steel, Plate, Insulation Board, and Wood Board) Packing list:3 * Step Drill Bit With BagDIY Supplies : MetalworkingMaterial : High Speed SteelType : Core Drill BitUse : Metal DrillingLength : 3-12/4-12/4-20

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