Check out this double-family of sanding blocks! Highly flexible, #34055 is ideal for curved or irregular surfaces. The dense side sands primer or feathers small imperfections, while a soft side handles rib and color sanding. Semi- rigid #34046 offers an aggressive design to level fillers and surfaces quickly and effectively. Flip it over for color sanding areas that require some flexibility. Sandpaper wraps around the 5" x 2 1/2" blocks with- out adhesive in wet or dry applications.