one of mine snapped. its a ridiculous size, and not the same as on the modern moby. the one that broke is a 5mm bolt with a .9 thread pitch. they have what appears to be the right on one the scootbikeshop website, but he has it listed as a .5 x 8, so i dont know what the deal is. anyhow, this would really be a life saver if anyone of the early moby collectors around here has one.