Inner diameter: 150 mm Outer diameter: 200 mm Thickness: 30 mm Made of high quality materials to ensure durability and stability for long-term use. This microscope accessory is designed to provide reliable, stable support in daily lab work. It helps maintain alignment and reduces movement during imaging and handling. Key benefits - Clear operating dimensions for precise fit and compatibility - Durable, stable construction for repeated use - Straightforward integration with standard microscope setups Use scenarios - Use as a mounting spacer between components to achieve precise spacing in a microscope configuration - Use as a support ring for large sample holders on the stage to reduce wobble - Use as a durable adapter in routine configurations that require repeatable positioning Compatibility and performance - Compatible with standard microscope configurations and common accessories - Provides rigid, deformation-resistant support to maintain alignment over time