Armstrong Tools Refrigeration Wrenches
4-sizes-in-1 ratcheting box wrenches with "finger tip" reversing feature on both endDesigned for servicing automotive, commercial, and home air conditioners, refrigeration units and freezersHex openings are for packing gland fittings, dust cap nuts, oil check pulls and other adaptationsSquare openings are used on male service valves, plug fittings, compressor valves and refrigerant charging tanks