Each Bid For 1 pc! Material:Brass Max Pressure:229 PSI,1.6 Mpa Operaturing Temperature:-20 to 120 C Flare Fit Tube OD- Fit Nut Thread: 6.35mm = SAE 1/4" (Fit Nut Thread 7/16"-20 UNF) 9.52mm = SAE 3/8" (Fit Nut Thread 5/8"-18 UNF)) 12.7mm = SAE 1/2" (Fit Nut Thread 3/4"-16 UNF) 15.88mm = SAE 5/8" (Fit Nut Thread 7/8"-14 UNF) 19.05mm = SAE 3/4" (Fit Nut Thread 17/16" UNF)