The MTS Abdominal Crunch trains the full abdominal wall by using two motions - the exercisers upper body moving downward and the lower body moving upward. INSTRUCTIONALS PLACARDS Easy-to-follow instructions illustrate proper use and muscles trained BELTS AND PULLEYS Heavy-duty belt system ensures smooth, even motion CUSHIONING Pads are molded with radius on edge for improved comfort SHROUDS Full front and back shrouds and pulley covers WEIGHT PLATES AND GUIDE RODS Solid-steel weight plates. Top weight plate is fitted with self-lubricating bushings 7/16" (11 mm) diameter weight selector pin magnetically locks in place and is connected to stack to prevent loss Drop down incremental weight system ADJUSTMENTS Roller mechanism on seat adjustment provides smooth operation FRAME DESCRIPTION Each frame receives an electrostatic powder coat finish to ensure maximum adhesion and durability; 11-gauge steel frame ensures maximum structural integrity FOOT PLATFORMS Polyethylene spray-coated for imp