1Suitable for displaying nail polish color, convenient for customers to select. 2Crystal clear glass material, as a color card has a magnifying effect, good coloring effect. 3Free of impurities, anti-corrosion, acid and alkali, can be used repeatedly. 4Transparent and bright, smooth edges without burrs, protect from scratching your hands. 5Perfect tool for beginners to practice nail art, they can paint nail gel on the bead.