Just received these from CHI Company and found them to be a great economical way to add an extra co2 line to my regulator. Just FYI. https://www.chicompany.net/index.php?main_page=product_reviews&products_id=90 9%3Ab8678d112153cf7898fd2f7d04ae9f7bhttp://www.chicompany.net/index.php?main_page=product_info&products_id=1941
even cheaper still would be to buy a Tee or Wye hose barb for $2.60.
and good luck with CHI- what a miserable company to order from.