These hose end fittings are designed to work with our -3 PTFE Lined Stainless Braided Hose (Part No. 3260-3, sold separately).  They are easily installed in the field without any special tooling required. Zinc plated mild steel construction with a brass inner sleeve.  Sold individually.  
These fittings are reusable, although the brass sleeve must be replaced each time a fitting is reused.  One sleeve is included with each hose end.  We also offer the Spare 3AN Brass Sleeves separately, Part No. 3261-3-SLEEVE.