The Ryobi 5 in. Plain-End Scroll Saw Blades Assortment (36-Pack) includes 12 each of steel skip-tooth blades for fast cuts and a smooth finish, reverse-tooth blades for reducing splinters, and spiral-tooth blades for cutting in all directions without having to turn the work piece. They are compatible with all scroll saws that take 5 in. plain-end blades.