3PC Nitrided Coating Step Drill Set
Finish: Nitrided Coating
Color: Black
Size: 6-30; 4-20; 4-12mm
Optional Material: H.H.S.&Carbon steel
Usage:
1. For drilling large holes in thin material and reboring existing holes;
2. Steel sheet and stainless steel from 0.1 to 2mm thick.
