Black Adjustable Fuel Log for Edelbrock VRS-4150, Holley & Demon CarburetorsThe Edelbrock fuel log #8100 is a great solution for getting the perfect fit on your Holley carburetor. It features a 10 AN telescoping center log that is adjustable from 7 3 4" to 13 1 2". It also features swivel ball socket ends that can be adjusted to clear various air cleaners and carburetor linkage accessories. Also includes two 1 8" NPT ports for use with a gauge or pressure transducer. It's finished in a sleek black anodized for a great look.