For use on 1982 to 1990 3/4 ton and 1 ton GM heavy duty trucks. 1985 to current 1/2 ton Ford F Series and full size Bronco with Dana 28 front axle. 1985 and 1/2 to current Ford F-250 heavy duty truck. 1985 and 1/2 to current Ford F-350 4x4, Dana 50 IFS and Model 60 mono beam outer adjusting nut. Heavy duty chrome vanadium alloy steel construction.