If you're working with PEX, you'll need an expander tool like DeWalt's. Here's exactly what the tool is and how you can expect it to work if you get one.

For PEX A pipe fittings up to 1.5-inches, DeWalt offers the DCE410B Bare Tool option, or the DCE410P1 20V Max XR 1-½-inch PEX Expander Kit. This DeWalt pipe expander is capable of working with ...