Insert the tip of your PEX over the end of the fitting. Slide the end in the PEX tubing which has the crimp ring or cinch clamp on it above the tip on the fitting which you screwed on to the copper tubing. Press it on as far as it https://makeupbrush67665.arwebo.com/53843186/1-2-copper-long-sweep-90-things-to-know-before-you-buy