【Precision Stability】: Features a 35mm single diamond grinding wheel supported by reinforced brackets, ensuring exceptional stability and safe, accurate grinding operations. 【Easy-Clean Detachable Sink】: The manual lens grinder includes a removable sink at its base, making water changes quick and hassle- for simple maintenance and cleanliness. 【Versatile Grinding Systems】: Crafted with a robust diamond grinding wheel, this tool delivers three essential functions: coarse grinding, fine grinding, and precise V-groove grinding in compact unit. 【Adjustable Water Flow Control】: Equipped with an adjustable water dispenser and a brass screw mechanism, allowing you to easily regulate the water droplets for optimal grinding performance. 【Wide Materials Compatibility】: Specifically designed for polishing and grinding a variety of materials including resin, glass, plastic, stone, and knives, offering flexibility for diverse projects.