Rizzato Califfo is a 1970’s Italian moped with Domino “1970’s chrome” type controls, but the throttle is a “wrap-around” type, instead of the usual “sliding block” type. So it takes a double-ended throttle cable, specific to that model bike. The throttle has no adjuster threads, and the center-located carburetor has no curved pipe. Those details affect the length of the exposed inner wire. At the throttle end, an 8mm diameter ferrule (end cap) is added over the regular 6mm crimp-on end cap, to keep the cable end centered and straight.