Specification: Item Type: Nail Grinding Head Set Material: Sandpaper Grinding Caps Size: Approx. 15 x 10mm / 0.59 x 0.39in Grinding Shank Size: Approx. 51 x 7mm / 2.01 x 0.28in Product Features: Designed for polishing and trimming nails to keep them beautiful and neat; the sand surface is used to polish uneven nail surfaces, strong and durable, easy to use; uses high-quality fine sand that won't easily fall off, feel free to use. Features: 1. Easy to Use: Simple to install and remove, meeting various nail art needs and suitable for many occasions. 2. Durable: High-strength and efficient grinding heads with good effect and durability, ensuring a long service life. 3. Great Performance: Grinding drills are used to polish uneven nail surfaces, offering high efficiency and stable performance. 4. Excellent Material: Grinding bits made from high-quality fine sand, sturdy and not prone to falling off, providing a perfect grinding effect. 5. Wide Application: Specially designed for polishing and trimming nails, suitable for processing nails, glass, plastic, metal, stone, ceramic tiles, etc. Package List: 50 x Grinding Caps 2 x Shanks