Back or Seat pad used on Cybex models: 5230 Leg Extension, 5470 Military Press, 5520 Utility Bench, 5560 Donkey Calf, 5603 Tricep Push, 5614 Leg Extension/Leg Curl, 5637 Leg Extension, 5641 Tricep Extension, 8620 Fly Station, 8630 Leg Press Station, 4046 Multi Neck, 4105 Leg Extension, 4108 Leg Extension, 4136 Seated Leg Curl, 4140 Hip Ab / Ad, 4145 Hip Ab / Ad.