Impulse sterling is the official supplier for the chinese national weight lifting team the impulse dual use inner outer thigh is perfect for a commercial gym environment thanks to the heavy weighted plates and stylish design warranty of the impulse dual use inner outer thigh main frames life time moving arms 2 years linear bearings springs adjustments 1 years hand grips upholstery pads and rollers all other parts including end caps 6 months tubing thickness range is from 2 5 mm to