If you need this part, you know it without much description because it's always breaking and the company doesn't sell it for some reason (it's the only "replaceable" part they don't sell). If your warranty is up or you bought second hand, you can't get a replacement at all, so I measured the part, modeled it up as best I could and made it 3D printable. The only difference between this and the original is the relief cut on the inside of the button, which I don't think is functional to the part probably a materials savings or fabrication process necessity.