Power Trim currently manufacturers 9 models of gasoline powered lawn edgers. From the Model 150, powered by a 3.5 HP Briggs & Stratton engine, to the 308-H, driven by a 4.0 HP OHV-GX Honda engine, all frame components remain the same with 100% interchangeability. All units employ an all steel base plate, steel wheels with solid rubber tires and permanently sealed lifetime lubricated cutter head bearing assemblies. General construction includes heavy gauge metals and tubing with full arc welds that resist fractures even under the most extreme operating conditions. All painted parts are powder coated with the finest baked urethane finish for maximum protection against scratching and weather deterioration. All controls are spring loaded positive locking. Manual blade drive disengagement clutch is standard on all models. With all the features afforded, right down to the all steel throttle control, it is easy to see why Power Trim edgers are the # 1 selling product of their kind.