Holley 121-121: 121-121 Straight Nozzle Hole size .021"
Straight Nozzles *For 4150/4160/4500 carbs
Straight Nozzle Hole size .021'' Hollow nozzle screw NOT included
Straight Nozzles *For 4150/4160/4500 carbs
Straight Nozzle Hole size .021'' Hollow nozzle screw NOT included