sbp to bbp

Quick and easy way to tell if they're legitimate 5x4.5 axles or redrilled 5x4 axles: measure the center register. If they're 5x4.5 axles with two sets of holes (for press in and/or screw in studs, for example) the center register should be ~2.825" IIRC. Redrilled 5x4 axles would have a much smaller center register, I don't recall the exact measurement offhand- maybe 2"?