Description: X-Acto® Knives come in a variety of shapes and sizes, and have a variety of uses. All knives are extremely sharp and you should always use with caution and wear safety goggles. Most knives and blades have color strips on the bottom of the package so you can easily identify which work together. Set Basic Carded- This set comes in a handy wooden case with formed inserts for handles and blades. It include one each #1-A, #2-B, and #5-C handles and blades 2, 7, 10, 11, 16, 17, 18, 19, 22 and 24.