Whether for routing vacuum or fuel, Nuke Performance offers barb fittings in a variety of sizes and options. Ranging from 1/4 up to 7/8, these fittings can be installed in between lines or components where ever space is permitted, and can also be attached directly to most Nuke products, and certain engine blocks. Spare 1/8 G Barb Fitting for 4 mm hose. Quantity : 1pc