GrimmSpeed offers a solution for removing your WRX STI crank pulley that does not involve stress, broken breaker bars, and potential blood loss. Heavy duty is the name of the game, laser cut from a 9.5mm plate of 12L14 and yellow zinc chromate coated for longevity. A 1/2" socket wrench location is incorporated so that you can put all might into it! The tool will work on both OEM pulleys and GrimmSpeed crank pulleys. Plastic washers are included to prevent any damage to your shiny GrimmSpeed pulley.