It is made of very flexible material, so it fits in any kind of curved surface and is hard to wrinkle. Cutting ability lasts longer than sanding paper. The sharpness of sanding material and cutting ability last long, so you can sand softly and use it longer than sanding paper. You can use it for water sanding as if water resistance sanding paper. It is made of extremely thin cloth, so you can cut it with a utility knife easily. The cloth is a flat woven fabric, so you can cut it lengthwise and crosswise as you want easily and with no waste. Emery cloth. Assortment of 4grit size grit size(Japan): #240,#400,#600,#800 Size: 93.5mm×228mm Total amount: 4 piece