Steelmaster SD7-40.5MM Spiral Flute Step Drill Set - 7-40.5mm
$169.00
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
SD7-40.5MM 7, 10.5, 12.5, 14.5,
16.5, 18.5, 20.5, 23.5,
25.5, 30.5, 32.5, 38.5,
40.5mm
3.0mm 115mm 12mm