Proflow's Universal quick-release fittings are lightweight and constructed entirely from 6061 aluminium alloy. They allow for quick and easy disassembly by hand of any fluid-related component with no mess or spillage. They're perfect for use on oil, coolant, and fuel lines. Proflow's quick-release fittings are available in sizes ranging from -4 AN to -08 AN in an anodised black finish.