Insert the top in the PEX over the top on the fitting. Slide the end with the PEX tubing which has the crimp ring or cinch clamp on it around the tip of the fitting you screwed onto the copper tubing. Push it on so far as it'll go.[4] X https://offshoreaccidentlawyer86677.is-blog.com/37288242/how-copper-male-adapter-can-save-you-time-stress-and-money