Refco
The combination ratchet wrench provides 4 sizes in one tool:
*9/16" Hex for dust cap on valves and for bolts on compressors.
*1/2" hex for screws.
*1/4" square for valves.
*3/16 square for refrigerant cylinders.
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REFCO is renowned worldwide as leader in refrigeration service products and for their innovation in the HVAC-R equipment and tooling space.