(chinacoal08)Packaging Detail: carton or as the client's requirements
Delivery Detail: 20 days after the deposit
Specifications
Coal drill bit have following features: large torque, wide drilling range, easy connection and durable
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 technical of finish casting and being made of high-grade alloy, the bits have following features: large torque, wide drilling range, easy connection and durable
