The Faithfull knife features a folding blade holder that securely stores the blade inside the body of the knife. It can be easily pulled open and locked in place for use. After use, a simple press on the release lever allows the blade to be returned into the body of the knife for safe keeping. Changing the blade is done by pressing the side release button on the blade holder and then pulling the old blade out. The new blade can then be slid into position ready for use. The compact size and light weight of this knife make it ideal for storing in your pocket, and it also has a belt clip and a lanyard hole. This knife uses standard trimming knife blades, which are readily available.