This is a specialty tool developed for Legacy / Liberty / Outback (2.5L) sedan and wagon vehicles and other models.

The user can replace the pulley on the car without removing the radiator. It saves lots of unnecessary work.

There are 2 different size insertion holes for crankshaft pulleys on Subaru's 
This is the larger of the two.
For the smaller hole tool insertion slots please see DM11-A1093

Also See DM11-B1093

Specifications:  Pins: 12mm
                        PCD: 64mm
                        Outside Diameter: 90mm
                        Inside Diameter: 42mm
  

OEM: 499977000 / 499 977 000