Tool #50145 is intended for the Cummins Signature 600, ISX, ISX15, and QSX15.
This tool includes the Setting Master - Monaco Tool #50146 and Monaco Tool Cutter Plate #20184 for the Cummins ISX 15.
Cutter Bit for the #20184 Plate is the PT-2210-12 and extra bits can be purchased here.
See Monaco Tool #50159 for ISX12.