Refrigeration Wrench, HVAC  Box Wrench,

1/4" x 3/16" Square / 9/16" x 1/2" Hex

✦ Matt finish provides corrosion resistance and easy to clean surfaces
✦ Designed for servicing automotive, commercial and residential
　air conditioners, refrigeration units and freezers
✦ Hex openings are used for packing gland fittings, mounting bolts
    , clutch bolts, tubing fittings, dust cap nuts and oil check plugs
✦ 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.