Fits All Holley Model 2010, 2300, 4010, 4011, 4150, 4160 & 4500
Sizes from 40-110
1/4-32 Thread
.050" Jet size
Standard Main Jet
This standard main jet is made of brass and has a hole size of 0.050 with a 1/4"-32 unified fine thread. These jets are essential to fine-tune the carburetor for street or race applications and are threaded to ease removal and installation. They are sold as a pair.