Fits most 2 and 4 Valve Engines 350, 500, 600, 620, 748, 749, 750, 800, 848, 851, 888, 900, 916, 996, 998, 999, 1000, 1098, 1198, 1199, 1299, Diavel and Street Fighter models Works on all high-performance street Ducati 750cc, 900cc and 916cc models 90-and-newer Remove spark plugs and place engine in neutral while using this tool Turns mark on the degree wheel to perfectly time the ignition Made in the U.S.A.. TOOL DUCATI TIMING/DEGREE