John Guest 12mm Push Fit to M10 Flexi Tap Hose Tail Upgrade your caravan, motorhome, or campervan with the John Guest 12mm Push Fit to M10 Flexi Tap Hose Tail. The JG Speedfit monobloc mixer flexi hose (braided) is designed for connecting plastic and copper pipes to a female mixer tap (monobloc mixers). To make a connection, simply push the push-fit fitting fully onto the pipe and screw the thread into the bloc. The hose features offset spanner locations for easy installation. To demount the connection, push the collet towards the body of the push-fit fitting and pull the pipe to release.