The MST 13mm Fixation Ring (Item #AR0191) is a purpose-built ophthalmic instrument in the Fixation Rings & Picks portfolio. Designed around its specific working geometry, it features 13mm diameter ring with 15-degree markings on top. Swivel style, open ring, with various degree markings on top of ring. Round, knurdled handle. Overall length: 133mm. This combination of thoughtful design details and clearly defined specifications helps surgeons quickly identify the configuration that best fits their preferred technique and procedural needs.