SMC CDLABN50-125-P-X1US MSRP: Now: $432.60 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... CDLABN50-125-P-X1US