Made of high-strength, lightweight ABS plastic, the BOG? Binocular Rest fits most brands of binoculars ranging in size from 7x to 20x. Includes a 3/8"-16 thread and 1/4"-20 size bushing and a Switcheroo System stem for mounting BOG? platforms. Size: approximately 3 1/4" deep x 6" wide x 3/4" tall.