The Ultra-Compact Group Lock Box is ideal for group lockout situations with multiple isolation points and employees performing maintenance activities on industrial equipment. Compact size so it easily fits into a toolbox, bag or the palm of your hand. Wall mountable and detachable for ultimate portability. Hinged transparent cover for easy viewing of contents inside. Capacity for up to 12 workers to attach their products. Exclusive key slot design with retainer fits a variety of key thicknesses while maintaing lockout security. Fits SafeKey Lockout Padlock keys.