Today we're going to review part number T4339700. This is the Titan zinc plated hand wheel brake actuator for drum brakes. This is a bolt on application. It has a 6,000 pound weight capacity. Now this hydraulic actuator will help synchronize your trailer brakes with your tow vehicle brakes. Basically this hand wheel makes it easily adjustable to fit any 1 and 7/8 inch hitch ball, 2 inch hitch… see more >