SANDPAPER MATERIAL: Silicon carbide; Electro coating, good toughness, good polishing effect, high efficiency, long service life Choose high quality natural abrasive.Using micro-replication technology, micron size silicon carbide is wrapped in tiny pyramids. As the pyramid wears out, the newly formed sharp sand will be exposed. PACKAGING INCLUDED: 45 pieces of 120/180/220/240/320/400/600/800/1000/1200/1500/2000/2500/3000/5000 grit sandpaper，3 packs for each grit. TOP QUALITY: Compared to traditional sandpaper using a layer of alumina dye as an abrasive, the gaps between the metal particles are irregular. Our new silicon carbide sandpaper can be sanded smoothly with moderate force and will not scatter, tear or break during use. Cracking, efficiency and lifespan increased by 40%. WET AND DRY: These sand papers are made of silicon carbide, and the nanosand technology makes the particle surface very fine and uniform, and can be used with water, varnish, shellac, varnish or oil. WIDE APPLICATION: The high grain sandpaper is very suitable for easy polishing and fine grinding of metal, glass, plastic, stone, jade, leather, lacquered wood and wood for smooth texture polishing and silky smooth, widely used in automotive sanding, wood furniture Surface treatment, woodturning surface treatment, metal surface treatment, etc. USE OF TIPS: Mesh 120 to 220: For coarse grinding and removing scratches. Grit 320 to 400: Used for light sanding between two top coats or for sanding metals and other hard surfaces. Grit 400 to 800: For the final finish before painting. 1000 to 1500 Grain size: For sanding between two coats. Grit 2000 to 5000: For polishing. PACKAGING INCLUDED: 3 * (120/180/220/240/320/400/600/800/1000/1200/1500/2000/2500/3000/5000 Grain) TIPS: The sandpaper is cut manually, so the physical deviation can be 0.4-1.2 inch. Note: This does not include other things, the color is Based on the first picture and other pictures only show effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to the measurement manual. Please allow deviation. Thank you!