Special tool for a/c hoses?

The tools make it much easier. You can buy a plastic set for under $10 or get a metal set for about $20. However you can remove springlocks without the tool but unless you are in a real bind why.

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i just left mine open... what the worst that can happen water gets in them?? thats what its made for.... then again i need a new heater core so i dont care if this one gets dmaged