This T-Ring Adapter from Kipon is an accessory that lets you mount T-2 components to your M42 mount camera. It features durable metal construction and expands your camera's ecosystem by making it compatible with T-2 devices. One side of this ring has standard T-2 threads that connect to your T-2 equipment and the other side has a bayonet connector specifically designed to fit your M42 mount body mount. Once the ring is installed on your T-2 component, connect the assembly to the body mount of your camera. Your camera manufacturer may offer camera models that have different mount types so consult your camera's operations manual to verify the proper T-Ring for your camera model.