Powertec Fitness Compact Leg Sled, Black The sled is driven by nylon bearing wheels that provide a smooth quiet ride on steel rods preventing lateral movement and providing a precise motion The seat and adjustable back pad along with the adjustable angle foot plate and hand grips lock the user into the position to perform the exercise The design of the carriage and seat section allow for a leg sled that is significantly more compact than any other in its class A foot tube is also included to provide calf raises Weight Capacity - sled: 700 lbs.; Weights sold separately