Step Drill,Set 4-32mm 4-20mm Bit Coated Wood 4-32mm 4-20mm 4-12mm 3pcs Hss Drill Coated Wood Metal Wood Metal Cutter Metal Cutter Core Drill Bit Cutter Core Drill 4-20mm 4-12mm Drill Rookin

3pcs HSS Step Drill Bit Set 4-32mm 4-20mm 4-12mm Straight Groove Step Drill Bit Titanium Coated Wood Metal Hole Cutter Core Drill Bit Set Metric Meet Your Demands -- With versatile step drill bit, you can process different kinds of diameter holes, which greatly saves you a lot of trouble. Great for steel sheets/ aluminum sheets/ copper/ / wood board and many other types of sheet metal with ease countersunk. Wide Application -- Suitable for Home DIY, and General Building/ Use. High Performance -- Ideal for Deburring, Chamfering, Cutting or expanding perfectly round holes in a variety of materials including steel, wood, , etc. Wide Compatible -- hex 1/4inch shank is better clamped on Pistol drill, Hand drill, Charging drill, Bench drill to slippage and shedding during rotation. Premium Quality -- Made from HSS steel; Heat treated and highly polished ensures outstanding durability and sharpness, cut more smoothly, can reduces friction, runs cooler hence lengthening service .

Specification:
4-12mm 5 (4, 6, 8, 10, 12mm)
4-12mm Length: Approx. 4.5cm/ 1.8in
Step Drill Length:
Optional Step Size:
4-32mm 15 (4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm)
4-20mm Length: Approx. 7.5cm/ 3.0in
Color: Gold +
4-20mm 9 (4, 6, 8, 10, 12, 1416, 18, 20mm)
Material: High Speed Steel+ Coating
Hex Shank Diameter: 1/4in(6.35mm)
4-32mm Length: Approx. 10.3cm/ 4.1in


Packing List:
1 * 4-12mm Step Drill Bits
1 *4-32mm Step Drill Bits
1 * 4-20mm Step Drill Bits