How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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Crimping Tools for Barbed Tube Fittings for Drinking Water

Use these tools with a crimping ring (sold separately) to connect barbed tube fittings for drinking water to tubing. Compatible with Viega PEX fittings.
Crimping Tools for Press-Connect Fittings for Drinking Water

- Tubing: Use with hard polyethylene plastic
Create a leak-tight seal between polyethylene (PEX) tubing and press-connect fittings for drinking water—no heat or solder necessary. The ratchet action lets you apply the right amount of pressure for a complete crimp. To ensure you’re using the correctly sized tool, they are color coded to match the compatible fittings. These tools are compatible with Viega PEX tubing and Viega PureFlow Press fittings.
Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.
Polyethylene (PEX) Tube Cutters

Cut PEX tubing with one or two twists. These cutters automatically adjust pressure during cutting to prevent distorting the tube end, so it's easy to attach fittings.