Product Size: Single size: length 1.3cm, diameter and mouth width 0.8cm A bag size: length 10.5*width 7.5*height 2.5cm Material: sandpaper Specification: 180 sand degree is finer, 120 sand degree is medium sand, 80 sand degree is coarse sand Package content: 1 bag of sanding ring (100pcs) 1.Three Grit File: 80 to remove the gel overlays or shorten the acrylic or artificial nails easily. 120 help you to prep the nail quickly, file the nail sidewalk, shape and smooth. 180 comes with a smooth surface and it will perfect on the natural nail and cuticle with your files low speed 2.Multifunctional: Designed to be suitable for most size nail drill machine, which is used for grinding, smoothening, Shaping, shortening and polishing for all nail arts as well as cuticle removal. 3.Easy to Use: It is suitable for manicure as well as pedicure. Work on natural nails (180 ) as well as artificial nails (180 120 80 ). 4.Portable and Light: It is easy to carry and portable to bring it out, You can so your nail artwork anytime anywhere. It is professional for both home and salon use. 5.Durable and Saving Your Money: High hardness, durable and abrasion resistant.