●You will receive: 10 different grits (180+240+320+600+1000+1500+2000+3000+5000+7000) can meet your different needs and make the surface of the items smoother. ●The powder that falls off during this polishing time does not stop the sandpaper and makes the product more durable. Note: Please use a sandpaper stick at low speed. The recommended speed is 2000-5000, please do not use it at high speed. ●High quality: the abrasive is made of high-performance aluminium oxide particles that are bound with resin materials and have a long service life. ●This product may be dry and wet, but it is best to sand wet. Do not sand to the end of the belt during use, otherwise the sandpaper will spread. ●Suitable for polishing all types of stone, jade, agate, emerald, glass, electrons, glass, gold and silver jewellery, metal, non-metallic surfaces, grooves, concave and other surfaces, can be used for pneumatic, electric rotary grinder, grinding machine, power grinder and suspension grinding.