Large capacity key lock box enables secure storage of up to five keys; Fits most ball biscuit, and tulip door knob styles Set your own alpha/numeric combination lock box; Reset the combination for multiple personalized combination code options For indoor and outdoor use; Key safe is constructed with a metal body for durability, vinyl coated shackle to prevent scratching, and weather cover to protect combination buttons Exterior dimensions: 4-5/8 inch (11.7 centimeter) H x 3-1/8 inch (7.9 centimeter) W x 2-1/16 D (5.2 centimeter); 13/32 inch (10 millimeter) diameter shackle with 1-5/6 inch (47 millimeter) L, 1-13/32 inch (36 millimeter) W Internal Dimensions: 3-1/2 inch (89 millimeter) H x 2-1/4 inch (57 millimeter) W x 1 inch (25 millimeter) D. Note: Refer to the PDF attached below in technical specification for user manual Includes two set your own combination push button lock boxes