Radius Rod - Heavy Duty - Upper TIG welded, Durable powder coat finish, Fully adjustable to set camber and toe, Heat treated 5/8" heim joints rated to 17,900 lbs, 1.25" Dom tubing with .125" thickness, 416 stainless steel misalignment spacers, HD versions are constructed from massive 1-1/2" seamless dom tubing you will have to worry about bending or breaking another radium arm again