Large capacity key lock boxes enables secure storage of up to five standard (2 inch) house keys; Shackle fits most ball, biscuit, and tulip door knob styles Set your own four-digit combination lock box; Reset the combination for thousands of 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 shutter door to protect combination dials from weather Exterior dimensions: 4 inch (10.2 centimeter) H x 3-1/4 inch (8.3 centimeter) W x 1-3/4 inch (4.4 centimeter) D; 13/32 inch (10 millimeter) diameter shackle with 1-13/32 inch (36 millimeter) L, 1-7/8 inch (48 millimeter) W Internal Dimensions: 3-1/2in (89mm) H x 2-3/4in (70mm) W x 1in (25mm) D Includes two set your own combination lock boxes, Weight: 1.0 pounds, Manufacturer: Master Lock