Enzotech premium 90 degree rotary fitting is compatible with 3/8" ID tubing and G1/4" thread type. High quality metallic black finish gives the fitting a black sparkling look! Fitting includes three different color O-rings for perfect sealing that will glow in the dark! Tubing ID 3/8" Tubing OD Thread Type: G1/4" Finish: Matt Black Disclaimer: All of Enzotech rotating fittings are not designed for constant or periodical movement of the fitting. If subject to that, warranty will be voided.