Size:Length: 9cm / 5.12" Wide: 3.3cm / 1.30"High: 2.5cm / 0.98"Detail:Appplicable people: All skinWeight: 50.0g / 0.11lbsUsage:1. Most coarse: used for file the nail fringe.2. Second coarse: follow the same direction flat file the surface of the nail.3. Thin: often used for smooth nail.4. Soft thin: smooth nail， make it luster.Features:- Small ， easy to carry.- Surface is very exquisite and soft. Gentle polishing so don't hurt nail. - Completely using physical methods. Polishing fast and effective.