THIS IS A NUBER 10 FEMALE O-RING ( 7/8-14 THD) X 10 HOSE FERRULE X 90 DEGREE BEND WITH A LOW SIDE ( 13MM) R134A CHARGING PORT. THIS FITTING IS MADE OF AN ALUMINUM TUBE AND CHARGING PORT WITH A STEEL NUT AND HOSE FERRULE. IT IS DESIGNED TO FIT STANDARD DIAMETER TWO BRAID HOSE.