Compatible: Fits cameras with standard threaded shutter release socket which is designed by the camera manufacturers to accept a mechanical shutter release cable, please refer to parts of compatible cameras listed in the below detail description Comfortable: Concave surface shutter release button give you comfortable experience when shooting photos Material: 100% made of quality brass, not the cheap aluminum alloy Technology: It's polished and enamel painted,every color is really beautiful Installation: Comes with anti-slip silicone O-rings, which are designed to ensure a tight attachment on cameras VKO soft release buttons ensures a comfortable finger touch at the top of your camera.