Impulse sterling is the official supplier for the chinese national weight lifting team the impulse dual use leg press calf raise is perfect for strengthening and toning your leg muscles it is one of the best machine to fit in with a commercial gym environment with the strong features and stylish design warranty of the impulse dual use leg press calf raise main frames life time moving arms 2 years linear bearings springs adjustments 1 years hand grips upholstery pads and rollers all o