Features and Benefits: Fits newer 12mm turbocharger bolts on Cummins ISB 5.9L and 6.7L Turbo Diesel Engines; 12mm 12-point wrench; 1/2" drive; Ideal for cleaning and servicing turbochargers, used with turbo drilling and cleaning kits; Services RAM/Cummins Trucks with newer 12mm bolts (specific year of change from 15mm to 12mm unknown); Compare to RAM/Cummins Factory Tools: 9866B, 9866A, and 9866.;