John Guest Female Adapter 3/8 inch Tube x 1/2 inch BSP Thread - SOLD IN PACK OF 5 This Female Adaptor is part of the John Guest Range of Drinking Water System components – It fits to a standard 1/2in Thread BSP and enables the attachment of a 3/8in Drinking Water Tube.
John Guest PI451214FS Female Adaptor 3/8 inch Tube Push-Fit x 1/2 inch BSP Thread