The CURT RV towing starter kit is the ideal solution for maximizing comfort, control and safety when towing your small travel trailer or camper. The kit includes a RockerBall cushion hitch, trailer sway control mount and an Echo mobile brake controller, complete with wireless Bluetooth® capabilities. This kit is ideal for towing with vehicles less than 5,000 pounds and trailers between 3,500 and 5,000 pounds. However, the included components are tested and rated up to 7,500 pounds. The kit is designed to fit 2-inch receiver hitches and 2-5/16-inch couplers. The RockerBall cushion hitch features ShockDrop technology that absorbs jerking and jarring at the coupling point to promote increased comfort, confidence and control while towing. RockerBall is also quieter and is virtually maintenance-free compared to other cushion hitch options. The included ball mount comes with the RockerBall pre-torqued in place, and it also features a welded tab to attach the included sway control unit. This CURT RV towing starter kit is made complete with an Echo mobile brake controller. Simply plug Echo into your vehicle-trailer 7-way RV blade connection. Then, using Bluetooth and a downloadable app, Echo provides control and monitoring of your trailer brakes through your smartphone (refer to your owner's manual for proper use).