Lower Control Arm BracketsAxel tube sizes available in both 3" and 2. 8" Machined out of 1018 billet steel; these bad boys do not require welding "Doubler plates" because they are already overkill in the strength department. They also feature a large flat area on the inside plates to add a cross brace (1. 375 dia recommended) for even more strength! This kit comes with grade 8 hardware and unwelded.