high chrome finish shower fast fit round connections supplied in a pair. The concealed fast fix kit is designed for surface mounting on a tiled wall or water resistant surface as part of a cavity or solid wall. The purpose is to provide a secure fixing for a bar shower and to provide hot and cold water supplies to the shower. The water connection for each bracket is designed for concealed pipework hidden in a cavity or solid wall. The inlet connection to both fixings is 15 mm compression to BS EN 1254, for use with half hard R250 copper tube to BS EN 1057, and the outlet connection is a ??external pipe threads to BS EN ISO 228.