I'll measure when I get home . I can tell you that it has a very small taper and the taper is a thin cone on one ant the other is really thick , maybe a solid 8mm thickness of material between the crankshaft mating airwaves and cam lobe that the points ride on . The bosch in really thin , maybe 2mm thick . That's why it cracked strait down the keyway/tapered section . Plays help on points . Fires twice since the crack acts as a cam lobe .
Can you measure and compare they specs with mine ?