... , R25, R28, R32, R38, T38,T45, T51 Atlas Copco, Sandvik, Ingersoll Rand,Furukawa and Boat longyear Coupling SleeveCoupling sleeves, other name is ... model powerful top hammers and drifter from Atlas Copco, Sandvik, Ingersoll Rand,Furukawa and Boat longyear etc.Thread size: R22, R25, R28 ...