Features: Brand new and high quality Made of tungsten steel materials, ensuring excellent wear resistance and stable rotation performances. This effectively enhances the effectiveness and experience of manicure polishing. Designed for convenient sanding rings replacement, users can easily switch out sanding rings to meet different manicure polishing needs in term of coarseness. The manicure sanding rings bearings provide balanced and stable rotation performances, allowing the sanding rings to evenly contact the surfaces of the nail during use, achieving precise and uniform polishing effects. The product is precisions engineered, offering exceptional durability that prevents damage or deformation over prolonged use. This extends the lifespan of the bearings and reduces the frequency of replacements. The surfaces of the manicure sanding rings bearings is smooth and flat, making them easy to clean. Simple cleaning steps ensure hygiene and maintain optimal operational performances. Specifications: Material:Tungsten Steel Color:Gold/Silver Size:Approx.6.9x1.25cm/2.72x0.49inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Mandrel Bit