JG Speedfit MDPE PE - Copper Coupler 20 x 15mm in Black/Blue. This plastic push-fit fitting connects MDPE pipe. The uniquely designed fitting incorporates stainless teeth to provide a tight and secure grip on the pipe. The connection is demountable if required, ensuring the system is easy to work when in the ground and needing to maintain and alter existing set-up. Installation time is greatly reduced when compared against traditional fixing methods.