Services 1999-2013 Jeep, Dodge, Chrysler. With 3. 7L & 4. 7L engines including DR, DS, HB, HG, KA, KJ, KK, ND, WK & XK systems. 3/8" drive. Metal Construction. California Prop 65 - Warning, This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. 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.