We bought some overstock from a national industrial supplier and this is one of the goodies we got in the mix. Here is a bag of 10 brass 1/4" tube push to connect tee unions. the Danfoss part number is 1864X4-BG. These are brand new never used. Ask any questions. +++FREE SHIPPING+++ to the U.S.A. I will ship the least expensive way to ship. Thanks for looking!