CTA Tools 1072 Alternator Wrench (T50 x 33 Spline-Benz) 2-part splined wrench required for removal and replacement of free-wheel drive pulleys found on Mercedes Benz alternators. T50 Torx bit end locks alternator in place while splined sleeve inserts into pulley Services '98 And up Benz, including 606 (210), 648 (211, 164), 642 (211, 164) Splined sleeve O.D. 19.4mm OAL 110mm/4-3/8" 1/2" square drive