The ricoh wg helmet mount is designed for wg series action cameras with a modular ball and socket joint and adjustable strap it allows you to wear your action camera on your helmet to capture shots from a headlamp like angle the 20 thumbscrew ensures that your camera is tightly and securely mounted while this accessory is suitable for all wg series action cameras they must be mounted to the separately sold wg holder o ch1470 before being attached excluding the wg m1