"The Keyster press fit jets are designed to allow a qualified mechanic to replace the pressed in slow jet found in many 70’s and 80’s Honda models. "CB350/400/500 Fours are just a few of the models that use the pressed in Slow Jet.
These jets are not available from Honda.
This can save a carburetor by allowing the slow jet to be removed for proper carb body cleaning and then be replaced with a brand new jet upon re-assembly. Sold in packs of 5."
