John Guest 12mm Push Fit x 300mm Flex Tap Hose Tail Motorhome Caravan Campervan

To make the connections, simply screw the tails into the mixer tap, then push the pipe fully into the push-fit fitting. The hoses have offset spanner locations for ease of installation. To demount the connection, push the collet towards the body of the push-fit fitting and pull the pipe to release.

eBay