Impulse sterling is the official supplier for the chinese national weight lifting team the impulse sterling low row machine is a great machine to do if you want to work on your back muscles it will provide the smooth motion of any other machine but the plate loaded features allows you to put more accurate weights on to suit your training warranty of the impulse sterling low row main frames life time moving arms 2 years linear bearings springs adjustments 1 years hand grips upholstery pa