Enzotech high quality metallic black 90 degree rotary compression fitting is compatible with 1/4" ID and 3/8" OD tubing and G1/4" thread type. Also included is an integrated O-ring for perfect sealing. Tubing ID 1/4" Tubing OD 3/8" 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.