Are you installing your carburetor jets with a regular flat blade screwdriver? You might as well use a hammer to make adjustments to your carburetor! Installing your jets with a flat blade screwdriver can leave burrs and nicks that can hinder performance by up to 50%. The JEGS Gasoline Jet Tool completely captures the outside of the jet allowing the blade to position itself in the jet. JEGS 2 in 1 design features a 5/16" nut driver for removing and installing your fuel bowl screws also. Works with most standard fuel bowl screws and gasoline jets, including the MaxJet. Made in USA.