Double-sided design: This polishing block adopts a green and white double-sided design. The green side is for fine grinding of 600 mesh, and the white side is for fine polishing of 3000 mesh, meeting the grinding requirements at different stages. High-efficiency polishing: The 600-mesh green side is suitable for initial grinding and finishing, while the 3000-mesh white side can be further refined for polishing, making it smoother and more delicate. Moderate size: The polishing block measures 9*4*1.2cm/3.54 *1.57*0.47 inches. It is of moderate size, easy to hold and operate, and flexible and convenient to use. Lightweight and portable: Each unit weighs only about 5.5g, making it lightweight and easy to carry. It is suitable for use in various occasions, whether in a professional nail salon or for personal home use. Individual packaging: Each polishing block is independently packaged with OPP film, which is clean and hygienic, easy to store and carry, and effectively protects the polishing blocks from contamination and damage.