1. High-quality material: Our 5PCS Split optical shaft fixed ring is made from and reliable material, ensuring long-lasting performance and stability. 2. Versatile design: The separate thrust ring and limit ring offer precise positioning and secure fastening of the optical shaft, providing optimal functionality for various applications. 3. Easy installation: With the specially designed fastening positioner, this Shaft Clamp Inside 30mm can be easily installed and adjusted, saving you time and effort in setup.Inside 30 x Outside 55 x thickness 15mm. 4. Enhanced stability: The fixed ring ensures a firm grip on the optical shaft, preventing any slippage or movement during operation, guaranteeing accurate and stable results. 5. Wide compatibility: This Shaft Clamp is compatible with shafts measuring 30mm in diameter, making it suitable for a variety of machinery and equipment, offering versatility and convenience to users. Colour:Silver Material:Aluminum Alloy Package Contents: 5PCS Split optical shaft fixed ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.