3pcs HSS Straight Flute Step Drill Set 4-12,4-20,6-30

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Diameter4-12mm,4-20mm,4-30mm
Pack Qty1
Packaged In/OnPlastic case
Shank Dia(mm)6mm 3 flat, 8mm 3 flat, 10mm 3 flat
Number of Steps4-12mm(9), 4-20mm(9), 4-30mm(14), with 4mm cutting depth
Step Increments of4-12mm (1mm), 4-20mm (2mm), 4-30mm (2mm)

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