123 589 09 63 00 Measuring extension - WS33.00-P-0190B

FG 33/Set B 

MODEL 211, 215, 216, 219, 220, 221, 230 

Use: 

For checking play in supporting ball joint

Fig 1: Identifying Measuring Extension (123 589 09 63 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.