Mr. Gasket Chrome Plated Fuel Lines With Pressure Gauges dress up any engine bay and give you that show-car look for a bargain price. Ideal for Holley 4150 carburetors, they feature dual 3/8-inch chromed steel fuel lines and incorporate a small, easy-to-read 1.5-inch fuel pressure gauge that reads in half-pound increments and has a range of 0-15 pounds.