| Size: | 1/2" x 3/8" |
|---|---|
| Material: | PolyAlloy |
| PEX Size: | 1/2" 3/8" |
| Application: | Heating Plumbing |
| Max Pressure (PSI): | 200 |
| Warranty: | 10 Year Limited |
| Standards Met: | NSF ASTM F877 ASTM F1807 |
| Fitting System Compatibility: | Crimp Clamp |
| Tubing Compatibility: | PEX |
| Max Temp (F): | 200°F |

Viega's PolyAlloy fittings work with both copper crimp rings and stainless steel clamp rings.
both
I used the steel rings (they are black)
either will work