Place of Origin
Jiangsu, China
Model Number
HSS Step Drill Bit--030
Material
HSS/M35/6542/4241/4341
Size
3-13mm, 4-12mm, 4-20mm, 4-22mm, 4-32mm, 6-35mm
Flute
Straight Flute, Spiral Flute
Shank
Triangle Shank, Hex Shank
Application
wood, plastic, slim iron, slim aluminum.
Feature
One drill bit could be used in various size drilling hole