Used on the following models:

Life Fitness
Home Gym - GS4-106

Parabody
CM3 Gym System - CM3-101
CM3 Gym System - CM3-103
CM3 Gym System - CM3-104
CM3 Gym System - CM3-105
GS4 Gym System - GS4-101
GS4 Gym System - GS4-104
GS4 Gym System - GS4-105
GS6 - GS6-103
GS6 Gym System - GS6-104
GS6 Gym System - GS6-105