Standard compression fittings for flexible tube consist of a short barb fitting and a compression ring. When the tubing is placed over the barb, the compression ring is slid over the outside of the tube and screwed onto the threads on the outside of the fitting. In effect, the compression ring takes the place of the clamp used on standard barbed fittings. Compression fittings are more secure than barb fittings and offer a distinctly different look. Since the compression ring on the fitting is designed to close over the outside of the tubing, both inside diameter (ID) and the outside diameter (OD) are important factors for a proper fit. TITAN RIG stocks standard compression fittings in every common size from several brands and in a wide range of colors to match your PC’s theme.