just been sorting through some old shit in the shed and dont know what hub number 2 below is, it hasnt got the correct dowel spacing to stick a manual hub on it so it might have come off some electric hub truck or something like that, I've had a pair of them knocking around the shed for a few years and I allways assumed they were standard 70 series hubs? I dunno what hub 1 is it arrived with a pile of other shit and I guess its an IFS hub or something, hub 3 is a standard 70 series front hub and 4 is a 70 series rear full floater hub