The MST Gass Retinal Detachment Hook (Item #AH0580) is a purpose-built ophthalmic instrument in the Hooks & Retractors portfolio. Straight shaft, Graefe hook tip, 13mm hook, 1.5mm oval hole. Flat handle. Overall length: 143mm. 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.