$61.99 Apollo 1/2 in. Copper Pro Crimp Ring (10-Pack)-APXCR12LT - The Home Depot
SharkBite 1/2-in x Copper PEX Stub Out Crimp Fitting in the PEX Pipe & Crimp Fittings department 
40PCS Pex Cinch Clamp Rings Pex Crimp Rings 1/2 Pex Pipe Tube Stainless Steel | eBay
