This Life Fitness Leg Press fits to the side of the Life Fitness G4 Home Gym. If you already own a Life Fitness G4 this is the perfect addition to your machine. The G4 Home Gym with Leg Press will provide of total-body exercise in a space-saving design. The Leg Press is easy-to-use, and offers biomechanically correct motion at all times. Please note this Leg Press cannot be used as a stand alone unit.