The Swiss Tech folding knife set features a quick change blade mechanism that locks a standard utility blade in place for safety and efficient cutting. The handle is made of lightweight, durable aluminum for strength and features a convenient folding design. Set includes 20 blades. These knives are great for use at home, on the job or outdoors. Both utility knives are super easy when it's time to change the blades; they both have belt clips and are both folding knives with safe locking features and lightweight handles. Each set comes with durable light weight handles that hold up to everyday working conditions. The Swiss Tech 2-piece Folding Utility Knife Set uses standard utility knife blades so it is ready to use right out of the package.