Disco abrasivo per legno 1500-4000 grana set 20 pezzi carte vetrate lucidanti
20 Sandpapers (5pcs each for 1500,, 2500, 4000 Grit). Just choosing the right sandpaper grit for your work. The smaller the grit number is, the coarser it is. The larger the grit number is, the finer it is.