The fist thing I need to say is I didn't invent this attachment. I found a picture on the internet (maybe on this forum) but I don't remember where. The 2 pictures pretty much show everything. What I did to improve on the original piece was to make a metal cap that I glued on to the shutter button. The camera's button is plastic and I didn't want to operate the cable release plunger directly on the button for fear of wearing a hole on it. This cost me $40.