The Milcarb A8 with 5/8 Flare CO2 Fill Nipple is an essential component for filling Liquid CO2 Tanks. It can be found in both the Milcarb Fill Box product line . To complete the filling process, the Milcarb Wing Nut Coupler is used in conjunction with this CO2 Fill Nipple. This high-quality product is designed to provide reliable and efficient CO2 gas distribution for various industrial applications. Trust Milcarb to provide the best equipment for your CO2 gas distribution needs.  The 5/8 Flare connection allows you to easily connect the Milcarb Fill Hose to make your final connection to your Liquid CO2 Tank.