12 Cone Step Drill Bit - (6-60mm)

Direct Hardware

$34.95 

6-60mm(12 steps:6,10,15,20,25,30,35,40,45,50,55,60mm)

Total length:106mm
Height of each step is 6mm 
Shank Diameter: 13mm
Shank length:24mm
Material: HSS-4241