This steering wheel hub fits the above models. Made of high quality light-weight aluminum with rubber, 66.3 mm/2.61 in in thickness and approximate 3.5" in diameter. The 6 holes pattern (70mm bolt spread) is compatible with most aftermarket racing steering wheels WITH THE SAME BOLT SPREAD ONLY (such as Momo and Nardi) and ball bearing type quick release kit, and it is a necessary part if you want to install the aftermarket racing steering wheel. Comes with 1 x hub boss kit, 6 screws and 1 wrench for installation. Instruction is not included with this package and professional installation is highly recommended.