The item shown in the listing is not the item we received. We ordered it 3 times and each time we got something different than in the photo. It has to be the old design/style. It comes with a castle nut and cotter pin. Installed on my car, cut the cotter pin (it was really poor quality and too small, the castle nut came loose and the whole spindle came loose while driving. The nut was very tight and the cotter pin was installed correctly. I would avoid that type of Setups and would choose an upgraded style as shown in the picture.