217 Straight Tubing coupler

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.1/16 inch - for air line & 1/2A fuel line