211 589 06 23 00 Brake pad test gauge - WS40.00-P-0066A

FG 40/Set A 

MODEL all 

Use: 

Brake pad check gauge for measuring the tire tread depth.

Fig 1: Identifying Brake Pad Test Gauge (211 589 06 23 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.