HRC89 M35 Cobalt Step Drill Bit 3-12/4-12/4-20mm TiAlN Coated Step Drill 1/4 Inch Hex Shank

Description:
HRC89 M35 Cobalt 3-12/4-12/4-20mm Step Drill Bit TiAlN Coating 1/4 Inch Hex Shank

Uses: Suitable for Aluminum, insulation board, PVC board chamfer, steel, aluminum, sheet metal, carbon steel, 304 stainless steel, etc.

HSS-Co/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 than common HSS-Co M35 step drill.

Specification:
Material: HSS-Co M35 Cobalt
Surface treatment: TiAlN Coated
Shank: 1/4 Inch Hex Shank
Hardness: HRC89

specification	Step	Step Height	Size
3-12	9	5mm	3,4,5,6,7,8,9,10,12mm
4-12	9	5mm	4,5,6,7,8,9,10,11,12mm
4-20	9	5mm	4,6,8,10,12,14,16,18,20mm

Features: 1. Spiral groove design(Great chip removal).
2. 118 ° X type bit design(No slipping, drill from any angle).
3. CNC, CBN grinding wheel(Higher accuracy, no burr).
4. A substantial increase in the wear resistance and oxidation resistance.
5. 4-12mm(9 Steps), 3-12mm(9 Steps), 4-20mm(9 Steps) for choosing.

Package Included: 1 x TiAlN M35 Hss Co Step Drill

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