The Böker Plus S-Rail (model 01BO556) is a compact, innovative utility knife designed by Darriel Caston. It features a front-sliding D2 tool steel blade with a satin finish, housed in a lightweight black G10 handle. The blade operates via a manual thumb-slide mechanism with a half-stop detent for added safety. The knife includes a deep-carry pocket clip that can also function as a money clip, and a lanyard hole for versatile carry options. With an overall length of 4.96 inches and weighing just 0.88 oz, it's an excellent choice for everyday carry tasks such as opening packages or cutting cords.