There are 2 types, one is Blue-size is 96mm, fit for Benz M270/274/276/278/629/133/157
  Another one is Red-size is 93mm, fit for Benz M271/272/273/642

• The crankshaft redial sealing ring has both a lip and a protective lip. 
• This tool is design to prevent damaging when assembling the cover to the crankshaft flange.