Use is assortment of light duty blades for very precise cutting, scoring, etching, chiseling, and trimming of cardstock, plastic, light-density woods, and other lightweight materials. Each multiple of 5 blades includes 2x #11 and 1 each #10, #16, and #17 blades. Blades are appropriate where precision cutting is useful with hobbies, arts, crafts, jewelry-making, scrapbooking, modeling and miniatures, 3D-printer work, phone repair, and other household, DIY, commercial, and industrial activities.