This CRL Stanley® FatMax™ Swivel-Lock Fixed Blade Utility Knife swivels open so you can change the blade without using tools. The thumb dial locks the blade in place, and there is a magnet in the nose to hold the blade while the knife is open. It has a cast metal core with soft panels for a comfortable grip, and comes with three heavy-duty utility knife blades stored in the handle. It uses any of our CRL Utility Knife Blades, which must be purchased separately.