Cylinder:----Pressure3442 psi (237 bar) Working PressureDiameter7.24" to 8.02" (18.39 cm to 20.37 cm)Weight28.6 lbs. to 42.7 lbs. (12.97 kg to 19.37 kg)Height20.87" to 26.78" (53 cm to 68 cm)Buoyancy FullNegatively Buoyant from -8.05 lbs. to -9.08 lbs. (-3.65 kg to -4.12 kg)Cylinder Nitrox ReadyNoManifold/Valves:----MaterialMarine Grade Chromed BrassType (Yoke, DIN, Convertible)ConvertibleValve Nitrox ReadyYes, Oxygen CleanedThread Size3/4" X 14 NPSMService Pressure200/232 bar (3442 psi or 2400 psi)Bands:----Band Materials304 Stainless Steel w/#4 FinishCylinder Diameter5.5" (14 cm), 7" to 7.25" (17.8 cm to 18.4 cm), 8" (20.3 cm)Compatibility (Brand)Fits Blue Steel Cylinders and ManifoldsHardwareYes, 18-8 Stainless Steel Bolt KitBoots:----Boot MaterialPVCFits Cylinder Diameters7" to 7.25" (17.8 cm to 18.4 cm) or 8" (20.3 cm)Flat or Round BottomRoundShapeRound with Stabilized FinsDrain RibsYes