Olson Scroll Saw/Fret Saw Blades, 36 Piece Assortment are for veneering, marquetry, veining, and general purpose cutting tasks. These versatile blades are suitable for cutting wood, plastic, and non-ferrous metals such as aluminum, brass, and copper. Each blade measures 5 inches long with a plain end and features a skip tooth pattern that enables fast cutting, excellent chip , and a smooth finish. They can be used with either fret saws or scroll saws that accept plain end blades. This 36-piece assortment from Germany includes 12 blades each of sizes #2, #5, and #7. The #2 blades are .029 inches wide, .012 inches thick, and have 20 teeth per inch, i for tight radius work on materials ranging from 3/32 inch to 1/2 inch thick. The #5 blades measure .038 inches wide, .016 inches thick, with 12.5 teeth per inch, suitable for close radius work on materials 1/8 inch and thicker. The #7 blades are .045 inches wide, .017 inches thick, with 11.5 teeth per inch, designed for cutting materials from 3/16 inch to 2 inches thick. Model Number: Olson36