EZ-FLUID Plumbing 1/2" C X MIP LF Brass Copper Pipe Union C x Male Iron Threaded (Copper Sweat Sockets X MIP) Connection Copper Fitting,Straight (1Pack) - Amazon.com
Copper Plumbing Pipe Fitting Elkhart 3/4" C x Male Adapter - 10 Pack, Made in USA - Amazon.com