Key box authorizes several people to gain access to property without duplicating and distributing keys. It's opened by a 10-digit push-button combination that can be constantly updated, and it stores up to three keys. It's tough, too, thanks to its solid-metal construction with a protective rubber shell. 4 1/8"H x 3 3/8"W x 2 1/4"D. Titanium. Reshipper pack.