Service:We attach great importance to our customers' shopping experience. If you have any questions, please feel free to contact us, we will reply you as soon as possible within 24 hours Versatile slot width: Features a 0.65 slot width, accommodating a wide range of lens sizes and specially designed for narrow, long lenses. Broad lens compatibility: Compatible with lenses ranging from 18 to 70cm in diameter, suitable for various materials including glass, resin, and PC. Precision angle control: Equipped with automatic and precise control for lens chamfering angles, ensuring accuracy and consistency in every use. High-quality performance: Designed for durability and efficiency, providing reliable performance for all your lens processing needs.