Proto J1112 Refrigeration Wrench 1/4" x 3/8" Square & 3/16" x 5/16" Square

Full polish finish provides corrosion resistance and easy to clean surfaces.Designed for servicing automotive, commercial, and residential air conditioners, refrigeration units and freezers.Square openings are used on male service valves, plug fittings, compressor valves and refrigerant charging tanks.Reversing switch lever allows for easy changes in turning direction which helps improve speed.