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Tool Manufacturer HSS Cobalt 5% M35 Straight Shank Twist Drill Bit

specification
Tool Manufacturer HSS Cobalt 5% M35 Straight Shank Twist Drill Bit
Industrial grade cobalt high speed steel give the drill bits much more durability
The triangle shank of the drill bits can provide much more holding force when drilling
Cobalt give the drill bits much higher hot hardness and abrasion resistence.


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xiexianfei@widetoptools.com
Cell: 18616927959
West Jinshajiang Rd 1555, Shanghai, China