SMC CDLA2D50-75J-D-A54 MSRP: Now: $539.50 Was: The Cla2 Cylinder Acts As An Air-Operated Brake With Spring-Backup. When External Position Feedback Sends A Signal To An Air Valve, The Brake Is Actuated And Fast-Acting Shoes Grab The Actuator Shaft... CDLA2D50-75J-D-A54