3-12/4-20/4-32mm M35 Cobalt Step Drill Bit 1/4 Inch Hex Shank HSS-Co Step Drill Bit

Size:

Model	Step	Size	Shank Type
3-12mm	9	3,4,5,6,7,8,9,10,12mm	1/4 Inch Hex
4-20mm	9	4,6,8,10,12,14,16,18,20mm	1/4 Inch Hex
4-32mm	15	4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm	1/4 Inch Hex

Uses: 
1. High-speed steel cobalt / M35 (Suitable for Aluminum, insulation board, PVC board chamfer,steel, aluminum, sheet metal, carbon steel, 304 stainless steel, etc.)
2. Industrial-grade cobalt plating (More than 4241and 6542 high-speed steel materials, live longer!)
 

1. CNC CNC, CBN grinding wheel.
2. 118° X Bit Design, you can drill from any angle, no slipping.
3. New flute design, great chip removal, small resistance, geat heat dissipation.

4. Higher accuracy sharper achieve drilling burr.

5. Plated cobalt coating, a substantial increase in the wear resistance and oxidation resistance.

6. 1/4 Inch hex shank: Ensure that the tool concentricity.
7. Ideal for cutting through metal, wood and plastic quickly and easily.