Manufactured by Teraflex. The TeraFlex JK/JKU Tera60 Front Axle Spring Pad is constructed from heavy-duty, CNC laser cut and precision bent 1/4�-thick steel that is accurately formed to ensure proper positioning for correct suspension geometry. Raw steel is ready for welding and paint or powder coating. FITS: � JK/JKU Dana 60 front axle w/ 3.25� O.D. tube � Driver side only. NOTE: � Welding is required.