The wing attachment is one of our most versatile accessories for your Total Gym. Attach to either top or bottom rails for upper and lower body exercises like: leg curl with straight arm lift, pull up, shoulder press, and more! Quick hitch-pin attachment method for convenient use. (see your Total Gym Personal Training Deck for exercises) For use on Total Gym models: All FIT models, XLS, 2000, 2200, 2500, 3000, 3000XL, Electra, XL. This attachment will NOT fit on the APEX G1, APEX G3, APEX G5, Xtreme, XL7, Summit, Pinnacle or Elite Plus.