A 5605-12-12-12 | 3/4" NPTF female tee hydraulic adapter is a type of hydraulic fitting that allows for the connection of three components (all 3/4" NPTF Female) in a hydraulic system. It has a female National Pipe Thread Fuel (NPTF) connection on one end and two female NPTF connections on the other end, forming a "T" shape. The 3/4" NPTF female tee hydraulic adapter is commonly used in hydraulic systems for branching out hydraulic lines to multiple components or for connecting pressure gauges, filters, or other accessories. It has a 3/4" inside diameter and is designed to fit with corresponding male NPTF threads.