#652L 3/8" dia LH Offset RoboStrut 2 1/2" - 2 3/4" Wheel
#652R 3/8" dia RH Offset RoboStrut 2 1/2" - 2 3/4" Wheel
#653L 3/8" dia LH Offset RoboStrut 3" - 3 1/4" Wheel
#653R 3/8" dia RH Offset RoboStrut 3" - 3 1/4" Wheel