Drillpro M35 Cobalt Step Drill Bit 4-22mm | TiAlN Coated | 1/4 Inch Hex Shank

Product Description

Description:
Drillpro HRC89 M35 Cobalt Step Drill Bit 4-22mm/5-21mm TiAlN Coated Step Drill 1/4 Inch Hex Shank
High-speed steel cobalt/M35
More than 4241and 6542 high-speed steel materials.
Industrial-grade TiAlN plating
1. Form Al2O3 protection cover, fit for high speed drilling.
2. Can work without coolant.
3. Hardness up to HRC89.
4. Life service 2-3 times longer the common HSS-Co M35 step drill.
Uses:
Suitable for Aluminum, insulation board, PVC board chamfer,steel, aluminum, sheet metal, carbon steel, 304 stainless steel, etc.
Specification:
Brand: Drillpro
Material: HSS-Co M35 Cobalt
Surface treatment: TiAlN Coating
Shank: 1/4 Inch Hex Shank
Hardness: HRC89

specification	Step	Step Height	Size
4-22	10	5mm	4,6,8,10,12,14,16,18,20,22mm
5-21	9	5mm	5,7,9,11,13,15,17,19,21mm

Features:
1. Spiral groove design(Great chip removal).
2. 118 ?? X type bit design(No slipping, drill from any angle).
3. 1/4 Inch hex shank design.
4. CNC, CBN grinding wheel(Higher accuracy).
5. A substantial increase in the wear resistance and oxidation resistance.
6. 4-22(10 steps), 5-21(9 Steps) for choosing.
Package Included:
1 x TiAlN M35 Hss Co Step Drill
More Details: