Oh when will I learn to read reviews before buying? You must purchase connectors before using this set. And you also need to buy a coolant adapter. Although it says "R134A" in the description, the hose size doesn't fit the R134A adapter. (Obviously this is the right size for R12.) I bought this because of the cheap price. After purchasing the correct plugs/adapters I really should have spent the money on a better kit.
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