Body-Solid Functional Training Center Vertical carriage system fiberglass reinforced nylon pulleys and locking, universal attachment connections 11-gauge, 2 in. x 4 in. oval tubing with electrostatically applied powder coat finish Precision-fitted frame components 4.8 mm diameter spun steel aircraft cables rated to over 2,500 lbs. 20 independent height adjustments and 180 degree cable positioning