Material:Aluminium Use:scuba tank for diving Pressure:High Volume:1.9lbs-29.2lbs Water Capacity:0.9L-13.2L Certification:DOT3AL approved Outer Diameter:81mm-203mm Working Pressure:3000psi ;3300psi Test Pressure:4500psi;5000psi Weight:1.2kg-19.1kg Height:274mm-673mm Color:Optional as customer required Name:aluminum scuba tank for diving oxygen cylinder