Paper lining: Thick E paper lining can differentiate sandpaper from other markets. Not easy to tear or wear while working and loop design: The and loop design can be installed quickly; coupled with the durable Nylon Sticker, you can complete the work easily and quickly High- materials: these particles are made of calcined durable alumina particles to the suitable particles match different grades of coarse sand durability: The high-strength resin bonding system can extend the service life of sandpaper packaging; the flannel tensile strength test exceeds the standard value of 1.47N Material: Alumina color: red Shape: square Size: about 95 x 186mm Granularity: 80#120#180# Number of holes: 8 holes Supporting technology: and loop Specification tolerance: +/- 1mm Note: This sandpaper is used for dry grinding, do not use for wet grinding. Please the sandpaper bag in a dry and ventilated place. Humidity will damage service life. Package Contents: 10 * 80# sand paper 10 * 120# sand paper 10 * 180# sand paper Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.