A combination of user-friendly ergonomic design and advanced biomechanical engineering, the WSCR349 was created to increase calf muscle interaction and speed the rate of development. This is achieved by the use of a unique foot platform design that eliminates stress compression on the ball of the foot while providing maximum range of motion for deep muscle fiber penetration. The weight carriage is designed for a 3:1 weight ratio and pivots on precision pillow block and sealed ball bearings for smooth friction-free movement through heavy-duty calf-blasting workouts. In order to carry the heaviest loads, the main frame is constructed of 2″ x 3″ 11-gauge high-tensile strength steel, making the WSCR349 perfect for high traffic, heavy use gyms and clubs. Super-durable, full 3″ thick DuraFirm™ padding supplies the comfort even during workouts with enormous poundage. The Body-Solid Lifetime In-Home Warranty and Full Commercial Warranty back the best calf machine in the industry. Pictured with optional Olympic Adapter Sleeves #OA8. Olympic Adapter Sleeves, weight plates and collars optional.