Steelmaster SD4-20MM Spiral Flute Step Drill Set - 4-20mm

The Titanium Nitride coating significantly increases the tool life by providing the following benefits:

Increased surface hardness to 85HRC

Ceramic surface, reducing friction by up to 30%

Especially resistant to cold welding

Suitable for cutting a wide range of materials

Part No.	Sizes Included	Step Length	Over All Length	Shank Diameter
SD4-20MM	4, 6, 8, 10, 12, 14, 16, 18, 20mm	3.0mm	74.5mm	8mm