✔【Diamond Grinding Wheels】This manual edge polishing machine uses diamond grinding wheels, which offer excellent thermal conductivity, high wear resistance, and an exceptionally long service life. The wheel grit sizes include #180 and #280, fully meeting diverse customer processing needs. ✔【Removable Water Tank】This lens polishing machine features a removable water tank, allowing users to easily change or adjust the water level according to different lens materials. ✔【ABS Housing】This eyeglass lens polishing machine uses a high-density ABS housing, which is resistant to deformation, high temperatures, flame retardancy, and impact. The material is also non-toxic, harmless, safe, and reliable. ✔【Double Brackets and Splash Protector】The double bracket design enhances the machine's stability and prevents shaking during ope-ration. The splash protector contains a small sponge to minimize water splashing during use. Please do not remove the splash protector. ✔【Wide Applications】This manual lens edging machine is made of high-quality materials and features an intelligent design. It is suitable for grinding various materials such as resin, glass, PC, stone, and cutting tools. It is now widely used in various optical shops, vision care centers, hospitals, optometry training institutions, and other places.