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