eBay

[WHAT YOU GET] – You will get 2Pcs hexagon key adapters for air conditioning ratchet wrench, provides access to 3/16-Inch and 5/16-Inch hard to reach valves.
[FEATURES] – Spring loaded ball bearing on hex adapter locks securely into HVAC service wrench.
[WIDE APPLICATION] – The A.I.FORCE Hex Key Adapters are designed to open and close the compressor service valve, rotalock valves and shutoff valves on air condition, refrigeration and other equipment, although there is very limited space.
[COMPATIBILITY] – The HVAC Service Hex Key Adapters fit for 1/4-Inch square wrench opening on Ratcheting Wrench, and compatible with 3/16" and 5/16" hex valves.
[PREMIUM QUALITY] - The A.I.FORCE Service Hex Key Adapters are constructed to last with high grade steel alloy, heat-treated for maximum strength.

The A.I.FORCE Hex Key Adapters are designed to open and close the compressor service valve, rotalock valves and shutoff valves on air condition, refrigeration and other equipment, although there is very limited space.
Specifications:
Item: Hex Key Adapter
Material: carbon steel
Black oxide plated
Overall Length: 2 Inches (50mm)
Size: 1/4-Inch Square to 3/16-Inch and 5/16-Inch Hex
Package Included:
2Pcs x Hex Adapters