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About Company
 
 
Model / Specification
Country of Origin
Surface Treatment
Material
Alias
Patent
Head Marking
Capacity
Minimum Order Quantity
Detailed Description
HSS Step Pilo Bit:
2 steps pilot bit for faster drilling
Prevent walking while drilling
Reduce tip crack, and debris can be discharged smoothly

Standard Cutting Edge:
Special cutting angle speed up the cutting efficiency and extend product life 
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