These portable buffing block nail files are made of sponge materials, useful and safe, can 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: Black -Material:Sponge - Size: 3.50X2.40X1.10cm/1.38X0.94X0.43in - The block nail grinding file is made of sponge material, which can withstand the long-term use. - The buffing block nail file is easy to use, your nails, can be used for fingernail, toenail. - The mini block nail files are nail art learners, which is practical and convenient. - The block nail sanding file can be used for manicure or 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: buffer block nail files