Holley 36-182 Tuning/Calibration Kit 3 power valves measuring 3.5", 4.5", and 5.0" are included Includes 12 metering block and fuel bowl gaskets Comes with fuel bowl screw, pump nozzle, and power valve gaskets Compartmentalized case allows for organization and comes with parts guide Ideal for track-side tuning or carburetor reassembly