Philmac Universal Transition Coupling 32mm MDPE pipe x 34 - 39mm other pipe UTC
One end will fit 32mm (1") Blue MDPE water pipe, the other will fit ANY pipe in the range 34mm - 39mm. So you can attach MDPE pipe to PVC, ABS, copper, lead, steel, Alkathene, galvanised iron, stainless steel etc. with just one fitting.