... Copco, Sandvik, Ingersoll Rand,Furukawa and Boat longyear Coupling SleeveCoupling sleeves, other name is Coupling, when using rock drills with ... conventional drifter rod, a coupling is required to join the adapter to the rod, ensuring the ends touch for efficient ... drill rod. We can manufactures semi-bridge, full bridge coupling sleeves for the percussive tools. Semi-Bridge Coupling sleeve - Small ...