The power jet meters a measured amount of fuel from the float bowl and delivers it to the venturi at 1/3 throttle and up.  Provides optimum fuel mixture at partial throttle openings. This allows you to run leaner jetting at lower RPM’s, while supplying more fuel at higher RPM’s for maximum performance and less chance of high RPM engine seizure. For VM carbs 30mm-40mm
ALLOWS MORE ACCURATE TUNING OF the MID-RANGE

PROP 65 WARNING: Cancer and/or reproductive harm - www.P65Warnings.ca.gov