CTA Tools 4175 Wheel Bearing Locknut Socket - Ford is a 4-lug type socket designed to fit the locknuts on '85-up Ford F250 and F350 with Dana 80 rear axle, '87-up Ford, E350 with Dana 80 rear axle, '88-up Ford F Super Duty with Dana rear axle and 10-1/4-inch ring gear. Use with 1/2-inch drive tools. Heavy-duty construction allows for strength and durability. Whether tuning up your '68 Corvette or changing the oil on a John Deere tractor, CTA can supply you with the tools needed to do the job. California Prop 65 - Warning, This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.