?NO Risk Purchase?:If you are not satisfied with your order within 12 months, we'd like to offer you a replacement or full refund. Any risk for your purchase. ?Perfect for practice?This color swatches for gel polish is ideal for nail art display and practice, which can display 150 colors. If you like to paint patterns on your nails but not skillful. The blank fake nail are definitely perfect tools that you can practice painting and carving various patterns directly. ?How to Use?: Kindly apply gel polish on the COLOR SWATCH RING and cured under uv/led lamp, you will get a beauty chart ring, put on the top of the bottle you can easily to know the gel polish color(dont need open the bottles)they are good tools for you to choose which color suit your nails. You can put the ring on your finger, helps you better know which color is best suit for you. ?multiple Usage?: Suitable for professional, nail salon, nail art school, nail art artist and personal / home use, wholesale, etc.It is easy to add and remove, which is used with nail gel or polish bottles. ?High quality material?: Kyzistn nail swatch is Made of environmental ABS material, which is durable, reusable.They are expandable, they will fit different bottle sizes.