While that option only comes with the tool and some expander grease in the kit box, the Milwaukee-compatible heads are also ...

Once it's on, the pipe will contract, perfectly covering the fitting. In the event that the base expander tool can't expand a pipe to the right size, Milwaukee also sells interchangeable expansion ...

If you're trying to get a PEX pipe plugged into an uncooperative fitting, a PEX expander tool from a hardware brand like Milwaukee will help you to make the connection. Under its ProPEX line of ...