The quick connect fitting tool works with both 1/4" AND 3/8" fittings. It slides over the collet ring on quick connect fittings (John Guest, Mur-Lock, DM, Speedfit, etc.) and allows you to easily remove tubing. The fitting tool is especially helpful in tight spaces and when the tubing is under pressure.Product FeaturesFitting ToolThe quick connect fitting tool slides over the collet ring on quick connect fittings (John Guest, Mur-Lock, DM, Speedfit, etc.) and allows you to easily remove tubing1/4" & 3/8"Works on both 1/4" AND 3/8" fittingsProduct DescriptionThe quick connect fitting tool works with both 1/4" AND 3/8" fittings. It slides over the collet ring on quick connect fittings (John Guest, Mur-Lock, DM, Speedfit, etc.) and allows you to easily remove tubing. The fitting tool is especially helpful in tight spaces and when the tubing is under pressure.More Info