This hose tail adaptor is a flexible connection that makes it easy to connect air, fuel, water, and other hoses. This adaptor fits 1/4" I/D tubes and has a size of 1/4" x 1/4" BSP. It can be used for a wide range of things. This adaptor, which comes in sets of three, is a great deal for both professionals and people who like to do their own work.Technical InformationSuitable for 1/4" I/D HosePriced per 3SKU SizePack Size GTSE-AAIR311/4 BSP x 1/4"3GTSE-AAIR321/4 BSP x 5/16"3GTSE-AAIR331/4 BSP x 3/83GTSE-AAIR341/4 BSP x 1/2"3GTSE-AAIR353/8 BSP x 3/8"3GTSE-AAIR363/8 BSP x 1/2"3GTSE-AAIR371/2 BSP x 1/2"3