Main application:
specifications: 25mm 27mm 28mm, 30mm, 32mm, 36mm, 42mm, Must use in the coal mine anchor cable supports and protections sneaking in the hard rock layer.
The propeller or fan blade uses the diamond compound piece, has the diamond high strength, wear resistant and hard alloy toughness, enables the drill bit sneaks when the hard rock layer to have a higher speed and longer life