Flair-It 1/2 in. PEX X 1/2 in. D PEX PVC Plug

Plug for PEX applications 1/2 inch used for inserting a plug into the end of a pipe 3/8 inch and 1/2 inch fittings will fit Pex or polybutylene tubing 3/4 inch fittings will fit PEX tubing only, to use on polybutylene.