Hub & Stub axles (4pcs). These are genuine SteelPress Production parts. They are fully legal to use on the road. They have sealed precision ball bearings. They never need to be greased.
The hub has 4 x M12 studs, the PCD is 100mm. The shaft is 40x40mm square - 125mm long (solid steel). With rounded edges for ease of fitment. Weight capacity is 900kg per pair.