The Master Lock No. 5400D Portable Lock Box is a durable and versatile solution for secure key storage. Its 3-1/4in (83mm) wide metal body ensures long-lasting durability, while the portable, over-the-knob design provides effortless installation and portability. The large internal cavity accommodates multiple keys without jamming. With a user-settable 4-digit combination, this lock box offers keyless convenience and enhanced security. A protective weather cover shields the combination dials from dirt, grime, and freezing, while the molded body and vinyl-coated shackle prevent surface scratches. Backed by a Limited Lifetime Warranty, it’s a reliable choice for safeguarding your keys.