The basics X-Acto Knives are an essential tool for crafters, artists, designers, and hobbyists alike for making carefully crafted cuts with confidence.  The benefits Includes a premium, soft-body case — great for organization, travel, and storage. The uses The X-Acto Basic Knife Set includes three indispensable knives and an array of carefully selected blades. The bottom line The set includes #1, #2, and #5 knives and #7, #10, #11, #16, #17, #2, #18, #19, #22, and #24 blades.