Fiber Light Output Port Size: 56mmRing's I.D.: 58mmFiber Dia.: 10mm, with PVC tubing(Length1M/1.5M/3Moptiona)5/8" standard adapter is for attaching the Fiber Optic IlluminatorNet weight: 0.47kg (1.04lbs) Hot Tags: (1M 1.5M 3M) annular ring light guide, manufacturers, wholesale, customized, discount, price list