This is the Faber 85cf, 13L Steel Cylinder Tank Din/Yoke 2640 psi Specs: Fill Pressure: 2640 psi Liters: 13 Cubic (in): 793 Cubic (ft): 85 ft Length (in): 25.98" Diameter (in): 7.01" Weight (lb): 31.2 lb Buoyancy full/empty: -3.80/2.32 DOT 3AA with +10% fill Supplied with RH DIN/Yoke combination valve and boot Faber cylinders give you the quality and performance you expect and appreciate in a steel scuba cylinder.