Features and Benefits:

• These tools adjust various settings on Rochester QuadraJet, DualJet, and VaraJet carburetors on most GM vehicles having the 3C system

Applications include: 2mm double-D - VaraJet lean authority screw and idle air bleed; and DualJet and QuadraJet mixture control adjusting screw; 2.5mm hex - DualJet and QuadraJet TPS adjusting screw; 7mm double D - DualJet and QuadraJet main metering jets; 10mm double D - DualJet and QuadraJet mixture control solenoid-rich screw.