The entire type includes 100 different sand and gravel sand trays: 80 # 180 # 240 # 320 # 400 # 800 # 1000 # 1500 # 2000 # 3000 #. Almost all polishing requirements are met.High quality brake discs are made of wear-resistant, durable, and anti-static aluminum oxide. Diameter: 125mm.The hole design has 8 pre punched holes for dust removal.Suitable for grinding, polishing, and other materials such as metal and non-metal, wood, rubber, leather, plastic, stone, glass, etc.characteristicThe sand tray is made of wear-resistant aluminum oxide, which is durable and anti-static.Pre flushing has 8 dust removal holes.Suitable for grinding and polishing materials such as metal and non-metal, wood, rubber, leather, plastic, stone, glass, etc.This type of sanding disc is very thin, so be sure to carefully apply it to the sanding machine and ensure that it is completely applied to the sanding machine to avoid the problem of detachment during use.