MUSTTOOL Spiral Step Drill Φ4-20mm (9 steps) IM-STB420 19869 MUSTTOOL

[Features]
This is a step drill replacement product.

[Applications]
For drilling pilot holes in steel plates, deck plates, copper trim, channels, etc.

【specification】
Step width (mm): 4.6
Number of steps (steps): 9
Shank diameter (mm): 6.35
Hole dimensions (φ): 4, 6, 8, 10, 12, 14, 16, 18, 20
Total length (mm): 82
Surface treatment: Violet coating
Drilling dimensions (φmm): 4, 6, 8, 10, 12, 14, 16, 18, 20
Drilling dimensions (mm): 4, 6, 8, 10, 12, 14, 16, 18, 20

[Specification 2]
Violet Coating

[Material/Finish]
Cobalt high speed steel

[Set contents/accessories]
-

【Note】
-