Description: Our shutter button is made of high quality aluminum alloy with anodizing process finish , not easy to fade and durable for a long time. The surface and the edge are very smooth and very comfortable to iron . The thread is carefully designed and tested. Fits cameras with a screw hole on the shutter release button, such as Leica , Rolleiflex, Fuji X100, Hasselblad , Nikon and so on. Hope you enjoy the shooting. Characteristics: Made of high - quality copper with an anodized finish , it is not easy to fade and durable for long use. Helps minimize gentle vibrations when the shutter “clicks” while shooting. Thanks to the slightly concave surface , the surface and the edge of the button are very smooth and very comfortable to use. The thread is carefully designed and tested and can fit your device perfectly. Fits cameras with a screw hole on the shutter release button, such as Leica , Rolleiflex, Fuji X100, Hasselblad , Nikon and so on. . SHUTTER TRIGGER BUTTON - CONCAVE 3 PCS Specifications: Material: aluminum alloy Surface : Slight Concave Color : red , black , silver Quantity: 3 pieces Head Diameter: Approx . 10mm / 0.39in . SHUTTER TRIGGER BUTTON - CONCAVE 3 PCS The package includes: 1 * red shutter button; 1 * black shutter button; 1 * silver shutter button; . SHUTTER TRIGGER BUTTON - CONCAVE 3 PCS