Product description High Performance White Fused Alumina Abrasive Sandpaper What is white fused alumina abrasive? White Fused Alumina is the purest alumina (Alumina powder content 99%) it is low impurities,low heat generation, very hard and sharp with a fast cleaning rate and high grinding efficiency,Because of low iron content,Sandpaper color will not discolor the surface you are sanding.The purple abrasive will not discolor the surface you are sanding.Premium white fused alumina abrasive provides a faster sanding experience.15 Grits Assortment meets all you need.Clog resistant Sanding sheet can be used for wet or dry sanding.Whether you’re sanding wood, drywall, or metal, each sheet can be used on wet or dry surfaces,and the durable latex paper backing stands up to the job.Great for construction, woodworking, carpentry, auto body repair,automotive polishing and home improvement projectsand .