FLASHBACK ARRESTOR 1. for oxygen rgulator & acetylene hose 2.input oxygen max pressure: 15bar/210psi, i put acetylene max pressure: 1.5bar/21psi 3. high quilty & compititive price 4. material : good brass 5. can also supply flashback arrestor for regulator, hose, torch, pipe,welding & cutting torch, oxygen & acetylene reg