i'd rather get a set that weren't useable.  not useing them for the splines, just need the bolt pattern and a strong hub. 

these are going on a attex 6x6 which i am changing all the wheels over to a 4 bolt instead of the old 3.  and this is easier than making adapters.  the axles are just 7/8 round with 1 hole for a pin for the sprocket hub, 2 bearings. very basic.