Made of high quality aluminum alloy with anodizing process finish, it is resistant to fading and durable for long-term use. Helps to minimize slight vibrations when pressing the shutter for shooting. Features a slightly concave surface, providing a smooth and comfortable feel when pressed. The screw thread is precisely designed and tested to ensure a secure fit with compatible devices. Compatible with cameras that have a threaded shutter release button, including models from Leica, Rolleiflex, Fuji X100, Hasselblad, Nikon, and others. Specifications: Condition: Material: Aluminum Alloy Surface: Slightly concave Color: Red, Black, Silver Quantity: 3 pieces Head Diameter: Approx. 10mm / 0.39in Package Included: 1 x Red Shutter Button 1 x Black Shutter Button 1 x Silver Shutter Button Note: 1. Please allow 1-3mm error due to manual measurement. 2. Monitor settings may affect color representation; actual product color may vary slightly.