Glowry&reg; G1/4" Threaded 1/2" OD, 3/8" ID Compression Fitting Silver Chrome Plated - 2pcs a Pack for Water Cooling System Tubing Reservoir Radiator 2 pieces of compression fittings in one pack. G1/4" Thread, For 3/8" ID, 1/2" OD Tubing Please remove the cap of the fitting before installing the tube. Brass and chrome plated. Life-time up to 3 years.