PREMIUM STEEL MATERIAL: This ratchet wrench is made of high quality steel material, high polished , stronger, corrosion resistant and durable for long time use.DIMENSIONS: Air conditioning wrench Square Opening diameter: 3/16 inch 1/4 inch 5/16 inch and 3/8 inch, Overall Length: 132mm/5.2inch. Quick-flip reversing lever for quick reverse ratcheting action. Sockets are clearly marked with hex sizes.PRACTICAL SERVICE FUNCTION: This HVAC service wrench is specially designed for installing or servicing heating, air conditioning or refrigeration units and Freezers, Commercial and Residential Air Conditioners.WIDE APPLICATION: This ratchet wrench is perfect tool for hard to reach compressor access valves, dust caps on access valves, oil check plugs on compressors, compressor mounting bolts, valve stem and service valves, old style compressor valves, saving your knuckles and your time.SpecificationColour: Blackmaterial: steelSquare Opening diameter: 3/16 inch, 1/4 inch; 5/16 inch and 3/8 inch.Package Contents:1pcs Ratchet WrenchOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.