Overview Reviews Product Description Hilti 2173396 Coupling Material: CPVC Size: 2 Inch Height Extension, CP 680-P/M. Product Videos Custom Field Size 2 Material PVC Product Reviews Write a Review Write a Review × Hilti 2173396 Coupling Material: CPVC Size: 2 Inch Height Extension, CP 680-P/M Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *