Powerline PSC43X Seated Calf Raise MachinePowerLine Seated Calf Raise Machine This Seated Calf Raise Machine delivers more strength, more power and more performance than any other machine in its class. Features an awesome 3: 1 ratio, specially designed foot brace and smooth, friction free movement. Weight plates and collars optional Features: Operates on a 3: 1 weight ratio for developing powerful calves. Angled foot platform with no slip surface for full range of motion. Adjustable for all