Purchase Qty. Reference FOB Price
100-299 Pieces US$20.90
300-499 Pieces US$20.20
500+ Pieces US$19.50
Product Description
Crossover coupling Maxdrill rock tools for mining drilling R28-R32 Product Description Used in extension rod connection, its function is to transmit impact energy from the rock-drill piston, as well as rotation torque, into the drill string with no losses. It must withstand and transmit up to ...