Release button (flat grooved 10mm) in brass for Leica, Fuji X100, x100s, x100t, x10, x20, x30, X-Pro1 & X-E1,2 and all cameras with cable release thread, within 24 hours of ordering (Electronics)
The Knöppken makes not only visually what her but also simplifies the operation, top of the forth. You should from time to time to switch tighten somewhat (hand-tight) because he likes loosens times. The price is, well, with estimated production cost