Color Available Convex and Concave Design : Red, Black, Silver, Gold<br>Color Available Flat Design : Red, Gold<br><br>It makes it so much more convenient to find the shutter button fast.It's very comfortable to press on the button. <br>The button surface and edge are very smooth. <br>The screw thread is carefully designed and tested. <br>It fits the cameras with screw hole on the shutter release button. as for Leica M rangefinder cameras include M3 M6 MP, digital M8 M9 M9P etc.; SLR cameras as for Nikon, for Canon, for Hasselblad, for Olympus, for Minolta, for Rolleiflex, for FUJIX100 SLR cameras..<br>Material: Metal<br>Button diameter Convex and Concave Design : 11mm<br>Button diameter Flat Design : 10mm<br><img src="http://gdetail.image-gmkt.com/875/068/803068875/2017/7/6560ee1f-182a-4bd3-a7f3-f468487443e1.jpg" width="940" height="940"><br><img src="http://gdetail.image-gmkt.com/875/068/803068875/2017/7/6bed9e41-eb25-4f8c-9992-10f43ccfc74f.jpg"><br><img src="http://gdetail.image-gmkt.com/875/068/803068875/2017/7/f71dd0bc-cd1f-40e3-9379-be2a71a8032d.jpg"><br><img src="http://gdetail.image-gmkt.com/875/068/803068875/2017/7/4b23ecdf-3424-4f4a-929f-53cedb5931df.jpg" width="940" height="940"><br><img src="http://gdetail.image-gmkt.com/875/068/803068875/2017/7/1aeb2e7e-ba4a-45b8-8ac7-76506a553193.jpg"><br><img src="http://gdetail.image-gmkt.com/875/068/803068875/2017/7/63197193-1078-4ce8-b644-990e98558a2e.jpg"><br><br>