Nail Drill Bits (100 Pack): Size: The diameter of the sanding tips is 0.8cm, and the length is 1.2cm. They fit most metal sanding heads for electric nail drills. Contents: This product includes 100 sanding bands, model 180# fine-grained sand. The fine-grained sand is smoother and better for polishing, buffing, and shaping. Easy to Use: Insert the sanding head into the drill handle during use, then easily insert the sanding bands into the sanding head on the drill handle. Material: These professional sanding sleeves are made of matte leather. The leather is durable and resistant to wear and tear, preventing shedding during use. Wide Application: These fine-grained sanding sleeves have a wide range of applications and can be used to remove nail polish, gel, acrylic, etc. They can be used for engraving, polishing, milling, and grinding. They can also be used to buff away dead skin. Important Note: If the contact pressure is too high when using professional sanding sleeves, they will wear out prematurely. Please reduce pressure during sanding. Suitable for both artificial and natural nails, these sanding bands are perfect for professional nail art or personal use. They offer high hardness, wear resistance, and durability. The fine-grained sanding sleeves are easy to carry and use, suitable for professionals and beginners alike. They also make a great gift for friends who enjoy nail art. Package Contents: 100 sanding bands (180 grit).