All MUL-T-LOCK padlocks are designed to provide high security door protection with patented Restricted Key control. The Schlage Kryptonite door padlocks use a standard Schlage C keyway so they can also use the same key as your other Schlage locks that are on your home or commercial space. And once you have your padlock, choose from hasp locks or padlocking slide bolts to secure almost any door.