Rock reamer 300mm with 4×9-7/8 rollers for vermeer/XCMG/Drillto/TXS hdd machine Thread type NC50/NC46 ect customized.
Rock reamer 400mm with 4×9-7/8 rollers for different models of hdd machine. XCMG/Vermeer/Dehang/Drillto/TXS ects NC50/NC46 thread type.
Rock reamers 500mm with 5×9-7/8 rollers for different brands of hdd machine. XCMG/Vermeer Thread:NC50/NC46