Best for sanding on flat surface with 10mm thick harder sponge!
Best size and thickness to hold make your work more efficiency!
We use high durability sponge. It is hard to be tore, so you can cut them to suit your purpose.
We use ink which is harder to be smudged one, so you can use it for wet sanding without worrying.
Grade #120: 4pcs, #240: 4pcs, #400: 4pcs