F & steps:
F: 3 - 12 mm / 10 Steps (3mm,4mm,5mm,6mm,7mm,8mm,9mm,10mm,11mm,12mm)
F: 4 - 12 mm / 9 Steps (4mm,6mm,8mm,10mm,12mm)
F: 4 - 20 mm / 9 Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm)
Two flute design provides faster, smoother and cleaner cuts each step is clearly labeled with the depth diameter in steps.
No need for a pilot hole
Titanium coated to reduce friction and run cooler
Used to cut holes in a variety of material like thin steel & iron, wood, aluminum alloy, insulation boards, PVC sheet, Concrete.
Package Included :
1pc x 3-12mm Step Drill Bit
1pc x 4-12mm Step Drill Bit
1pc x 4-20mm Step Drill Bit