ITEM NAME:Crystal Shine Glass Nail Files Buffer Manicure Tools Kit Set Gradient Rainb B2P1 Crystal Shine Glass Nail Files Buffer Manicure Tools Kit Set Gradient Rainb B2P1 Hygienic & Reusable: The non-porous cordless baby nail file prevents the growth of unhealthy substances, making your nails healthier.The rotary check jumbo files nail hardener for nail drill are easier to clean after use. Fancy crystal nail file bits gives you more peace of mind. Strengthens Nails: Each product package includes 20PCS crystal glass Nail file. Regular, long-term use can strengthen & harden natural nails allowing you to grow healthy, long, beautiful nails! Smooth Finish: Byrd ceramic 100/100 material, the tropical nailfiler seals the natural keratin layers together at the nail's edge, leaving nails smooth with no jagged edges, reducing nail splitting, chipping & peeling Abrasive Surface: Double-Sided Grit: All Files feature the same grit colour:Purple Material:glass size: 14x1.2x0.3cm Package Contents: 20 x Nail polishing strip Instructions: 1. Rub the nails from the sides to the center of the nail tip and rub in one direction. 2. After licking the same part several times, move it to other parts to rub it, then circulate the real nails cyclically to avoid hurting the real nails. Precautions: 1. Use a nail file to gently rub on the skin. When the abrasion is more rough than the skin, the abrasiveness of the burr is over the natural nail resistance, which may cause the natural nail to break or peel off. Choose a softer nail file. 2. Do not rub the real nails in the same part of the back and forth. This kind of friction will cause fever, causing damage or falling off of the real armor.