1. orange_smurf

    hex/allen key for compression fittings

    Hi, i'd like to use a Hex Key for my G1/4 compression fittings and i'm not sure what size to use - 10mm? I cant just pop into a local store to check so i'm hoping someone here could help :confused: My fittings: Alphacool Eiszapfen 13mm Deep Black Hard Tube Compression Fittings - Six Pack
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