If you have a rotary tool, these are great for sanding! Excellent and economical for clean-up and pre-polishing, AK12150 74-pc. Sanding Band Assortment includes bands 1/2″ x 1/2″ and 1/4″ x 1/2″ (12.7 mm x 12.7 mm, and 6.35mm x 12.7 mm) and in 7 grits plus 4 1/8″ shank mandrels.