Med-Fit Systems 2009 Nautilus Nitro® Abdominal Core Upper Body Lower Body The Nautilus Nitro® Abdominal machine is the only true abdominal crunch machine! It provides health-club quality strength training to get the results you're looking for. Four-bar linkage provides a moving axis of rotation that emulates the body's moving axis of rotation Elbow and back pads with hand grips provide upper body stabilization Leg anchoring ankle pads provide lower body stabilization Controlled motion movement arm isolates abdominal sheath eliminating hip flexor involvement Length 41" (104 cm) Width 42" (107 cm)  Height 54" (137 cm) Machine Weight 514 lbs (234 kg) Weight Stack 200 lbs (91 kg) 1.800.831.7665 1.800.831.7665