Stand alone shock outboarding tab for the Rockwell axle. Spaced for 1.75" clearance from the top of the kingpin. Center hole sized 1.25" for round tubing gusseting. Tabs supplied in 5/16" and 3/8" steel with a 1/2" shock bolt hole. Four inch flat area for welding. Can be ground on the inboard side to increase kingpin clearance. Sold as single tabs.