This RockJock® 60 VXR housing for builders features the ductile iron center casting, 3.500" o.d. x .375" wall d.o.m. steel tubes and no ends so that ends or floater spindles of your choice may be installed. This housing includes an AR400 steel bottom skid plate and all of the other standard RockJock® 60 VXR features such as fill plug, drain plug and ring gear load bolt. NOTE: Cover and yoke not included. Carriers must be turned down to 8.300" o.d.