Use this assortment of medium duty hobby blades for very precise cutting, deburring, chiseling, and a variety of other general purpose uses on plastic, light- to medium-density woods, and other light- to medium-weight materials. Each multiple of five blades contains 2x #24 and 1 each #18, #19, and #25 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.