SSS Type Hose is 3/8 OD x 3/16 ID W/ (4mm) Studs on both ends. Includes a spring wire hose guard. The overall hose length = (hose length + 3-1/4") measured from the end of the hose studs. Bijur hose is measured from the exposed rubber, +/- 1/8".500 PSI. Special hose lengths are also available.