3pcs Large HSS Steel Step Cone Drill Titanium Bit Set Hole Cutter 4-12/20/32mm

Spiral Grooved, High Speed Steel (HSS), Titanium Coated Step Drill Bit Set

3 Pieces 4-12mm/ 4-20mm/ 4-32mm
Each Universal Cone Drill Comes in its own Plastic Case

Can be used for woodworking plumbing Steel, Brass, Wood, Plastic etc. Cutting fluid is recommended for best results when cutting metals.

Inlcuded:
1 x 4-12mm Step Drill - 5 steps - 4,6,8,10,12, 7mm Depth Per Step, 6mm Shank

1 x 4-20mm Step Drill - 9 steps - 4,6,8,10,12,14,16,18,20, 4mm Depth Per Step, 8mm Shank

1 x 4-32mm Step Drill – 15 steps – 4,6,8,10,12,14,16,18,20,22,24,26,-28,30,32, 4mm Depth Per Step, 10mm Shank