Panzong Shutter Release Button The shutter button is a concave surface, perfect feel, and fits the arc of the finger. Perfectly fits your camera and enhances your comfort during use. Just screw the soft release button into shutter release button's threads and you will enjoy the soft and steady shutter release operation. In addition, it decorates your camera, which will make your camera look more stylish and elegant. Good Compatible-- Compatible with Fujifilm: X-Pro3 X-Pro2 X-Pro1 X-T4 X-T3 X-T2 X-T30 X-T20 X-T10 X100V X100F X100T X100S X-E3 X-E2S X-E2 X-E1 X30 X20 X10 Compatible with Sony: RX1, RX1R, RXRII, RX10, RX10II, RX10III, RX10IV (Sony RX1 series does not need to install the rubber ring) Compatible with Leica: M7, M8, M8.2, M9, M9-P, M10, M-E, M-P, M-A, M-Monochrom, M Type 240 Compatible with Canon: F-1, New F-1, AE-1 (FD mount) Compatible with Nikon: Df, F3, M2 Panzong camera shutter button compatible with most cameras which have tapered thread. Specification Diameter: 0.43 inches (11 mm) Material: metal Weight: 0.07 oz (2g) Package Including 1. Shutter Release Button x3 2. Rubber Ring x3 (The rubber ring is mainly used for Fujifilm X cameras to ensure a firm fixation.) Tips: You can tighten the shutter button properly to ensure the installation is secure. Please be assured that the shutters of the shutters of the machine not be easily damaged.