Pneumatic Chucks for 52mm and 96mm Rocklock™ RL96E-6796mm pneumatic RockLock™ unit with pushers. RL52E-6652mm pneumatic RockLock™ unit with pushers. RL52P-66B52mm pneumatic RockLock™ unit. (Side-Port) RL96P-67B96mm pneumatic RockLock™ unit. (Side-Port) RL52P-66A52mm pneumatic RockLock™ unit. (Bottom-Port) RL96P-67A96mm pneumatic RockLock™ unit. (Bottom-Port)