Used on the following models: Advanced Fitness Group 3.1AE Elliptical 3.1AE - ...Used on the following models: Advanced Fitness Group 3.1AE Elliptical 3.1AE - EP552 - 2012 4.1AE - EP553 - 2012 Horizon Fitness Horizon Series - EX-79 (EP546B) Horizon Series - EX-79-02 - 2012 (EP566)more