Good grain mix from 120 to 3000, 36 sheets of different grits, 3 sheets per grain: 120/220/320/400/600/800/1000/1200/1500/2000/2500/3000. Silicon carbide; Impermeable; Electro-coating. The kit allows you to pre-polish to make headlights transparent or sand motorcycle plastics before painting. The grain remains permanent and the paper does not get soaked even after several minutes in water. With this product you can easily remove small scratches on the bodywork. You can also use these sheets on wood by using the grit from the coarsest to the finest without skipping steps. In this way, the sanding time per grit is short and the result obtained is exemplary.