Vertical Knee Raise Attachment. Specially contoured, oversized back pad, arm pads and handgrips add comfort to the grueling abdominal, shoulder and triceps workouts you can get from the combination Vertical Knee Raise Dip Station. Not recommended for the faint hearted, this is one option that builds champions. NOTE This station cannot be used with the MH30 Multi Hip Station. One or the other can be attached to the EXM3000LPS, not both. For use with EXM3000LPS Home Gym only.