Key Spanner For Fitting and Removing Hose Connections on Gas Cylinders
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No more searching for an appropriate key ... no more nuts damaged by improper tool.
With this handy key for cylinders you always have the right tool right where you need it. Once the tool has been passed over the disconnected coupling, tighten the nut; the key is then held captive on the coupling until it is next required - which will be when the coupling needs to be undone again.