We offer a full 1 year warranty on all welds, valves, fittings and cylinders against normal failure. If it breaks, we will repair or replace it. This warranty does not cover abuse or external physical damage done by operator error. All repairs are to take place at American Thumbs Inc. All Circuits are to have working hydraulic Pressure Relief valves set to no higher than 2000lb PSI Effective 7/8/07