QuickFitting 1/2 Inch Push to Connect Coupling | Patented Design for Superior Sealing | Push On Brass Plumbing Pipe Fitting | for Copper, PEX and CPVC | 5-Pack - Amazon.com
The Plumber's Choice Brass Compression Coupling Fitting, with Packing Nut, 1 in. Nominal Fitting x 5 in. Length (12 Pack) 2322LCR-12 - The Home Depot