How cool are these! For perfect proportions, we make them from bigdiameter stainless steel material with a recess lip on each side to hide thegasket and move the bolt head closer to the banjo. We kept the wrenchsurfaces short, knocked the corners off the hex and rounded the bolthead too. Theyre sized to fit both 5/16″ and 3/8″ hose, with plenty of fuel flowguaranteed.Do not use with 3×2 Stromberg progressive linkagekits.Note: This item is ineligible for return or exchange.