You'll also need sanding paper of various grits for the sanders. The longboard paper is 80-grit, and can be cut down for the various length sanding blocks, while the adhesive-backed round paper is for the DA sander and we used 40-, 80-, and 220-grit (not shown). These are also available in a Velcro-type backing, depending on your preference and what pad you have on your DA. The adhesive-backed discs can also be wrapped around the small sanding block. It always pays to use quality sanding paper, as it'll last much longer than the cheaper versions.