$55.99 PEX-1210C PEX Crimp Ring Removal Tool for 1/2-Inch,3/4-Inch,1-Inch F1807 Copper Crimp Rings 
(100) 1/2 PEX Copper Crimp Rings by Sioux Chief, Made in USA, ASTM/CSA, #649X2 | eBay
Zurn 1/2 in. Copper Crimp Ring with Positioning Cap-QCR3XPC - The Home Depot
