100 589 02 59 00 Adapter - WS00.00-P-0022Z

FG 00 

MODEL all 

Use/specification: 

Adapter 3/4" external to 1/2" internal square drive, 78 mm long

Fig 1: Identifying Adapter (100 589 02 59 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.