By upgrading your existing coupling, it benefits from the improved features and reliability of the new generation. To upgrade a manual coupling, all you have to do is change the mechanism, while power-assisted couplings must be adapted to make use of existing indication kits and power actuator (PA models).The upgrade kit includes everything you need.Improved mechanism + CSM sensor for signalling open/closed coupling + protective bracket suited to existing rotary devices + bushings etc. found in the new generation.