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Coal Drill Bit
Product Detailed
It is mainly combined with spiral drill shank and works together with coal electric drill machine or portable drill machine.
Specification: Drilling Hole Diameter:φ30,φ42
Connective Dimension: φ8.5,φ12.5
Types: Dry type, Wet type
Features: It is mainly combined with spiral drill shank and works together with coal electric drill machine or portable drill machine. Adopting the technic of finish casting and being made of high-grade alloy, the bits have following features: large torque, wide drilling range, easy connection and durable.
