Features: Double Line Fishbone plate type: Provides double line focusing function for Photography. Allows Precise Focusing in both horizontal and vertical directions, helping to take sharper photos. Accurate Focusing: Helping photographers achieve accurate focusing and improve the quality of their photos, especially suitable for photography work that requires precisely focusing. Convenient to carry: Lightweighted structure, easy to carry and use, providing photographers with a convenient shooting aid. Adjustable length and angle, adapt to different camera lens, scene requirements, to meet a variety of focusing angle requirements. Specifications: Diameter Size：about 103mm/4.05in Thickness about：1.5mm Component: Aluminum Type: YGS60/YGS80/YGS100/YGS120/YGS140/YGS160/YGS180/YGS200 Package Includes: 1PC Photographic Focusing Double Line Fishbone Plate note: Due to the problemsof lighting effects, there will be tolerances in product, please understand. Please allow 0-1cm error due to manual measurment