T Tubing Couplers, for 1/16" Airlines, 4 pack, by Robart

Made from high-density plastic resins, Robart Tubing Couplers are safe to use with air, glow- and gas-fuel systems. The couplers come four pieces per package of either Tees, Elbows, or straight couplers. The couplers are color-coded red and black.