These portable buffing block nail files are made of sponge materials, useful and safe, could be used for long time. The surface is very delicate, polishing the nails smooth and comfortable. It is so easy to get elegant nails. The compact and small size, portable and lightweight, simple to carry. Features -Color:Assorted Color -Material:Sponge -Size:3.50X2.50X1.10cm/1.38X0.98X0.43in - Block nail grinding file is made of sponge material, which could withstand the long-term use. - The buffing block nail file is easy to use, your nails, could be used for fingernail, toenail. - The compact block nail files are very suitable for nail learners, which is practical and convenient. - Block nail sanding file is proper for manicure or pedicure sanding, simple to use, double side sanding. - This nail file is small and compact size, portable and simple to use, easy and convenient to carry. Suitable for home, salon. Package list: 250 x nail files