AN8 AN -8 8AN 8-AN AN-8 aluminum Olive Sleeve Insert Ferrule For PTFE/teflon hose fittings. Aluminum High Quality Raw Finish. CNC Machined to Aerospace Grade. Tight Secure & Leak Free Connection. All our aluminum Fittings and Adapters are precision CNC machined to the highest standard in a state of the art manufacturing facility, all components are manufactured to Aerospace Grade for a durable, tight, secure and leak free connection. 100% New and Best Quality. Sell 10pcs perorder.