This kit is a craft project for adults and children to do together. Great way to introduce youngsters to both knives and woodworking. Adult supervision is required. Not recommended for yougn children. Includes all parts and instructions to make a wooden pocket knife. Components are precision cut from American hardwoods. This version is a single blade slipjoint with genuine spring-action. Finished knife size approx. 3 1/2" closed. You can final sand, sharpen, stain etc to make your project a "custom". Made in USA.