Top processing and precision manufacturing are characteristics for this sprocket adapter by P.B.R. Italy. This adapter is an ideal replacement for the very expensive and relatively heavy original chain wheels. Dark anodized and with fixing screws of high strength steel, are guarantee for a long life. When using 520 chain wheels, also the sprocket and chain for below listed Ducati must be changed. Please keep in mind that the Ducati 748 has original a 520er chain wheel.