Fitment---- Camera Shutter Buttons are suitable for cameras with screw hole on the shutter release button, such as for Leica, for Rolleiflex, for Fuji X100, for Hasselblad, for Nikon, for Canon and so on. Hope you will enjoy your shooting | High Quality Aluminium Alloy---- Our shutter release buttons are made of high-quality aluminium alloy with anodizing process finish, which is not easy to faded and durable for long time use. Head Diameter: Approx. 11mm / 0.43in | Comfortable Click---- The surface is slightly concave, and the surface and edge of the button are very smooth, which is very comfortable to press. It helps minimize delicate vibrations when you "Click" the shutter to shoot | Thread Design---- The screw thread is carefully designed and tested, and it can match your device perfectly. The product is easy to install and can be tightened by aligning with the screw hole. Ideal and direct replacement for old shutter release button, dependable to use | Quality Assurance---- As a professional seller, high quality products and services have always been what we stick to. Every Shutter Release Button has passed the quality inspection before leaving the factory. Please confirm whether the product is suitable before purchasing