Edelbrock 1423 Metering Jet<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Drill size is 0.086 inch</li><li>Made of brass</li><li>Gasoline type</li><li>Step in the rod changes the effective jet area between high and low manifold vacuum conditions</li><li>Circuits are checked for proper sizing and the calibration is checked for proper jets， primary and secondary metering rods</li></ul></div><img src="http://ecx.images-amazon.com/images/I/416jPetl39L.jpg" noproxy>