2L Stainless Steel Pressure Barrel with Transparent Acrylic Lid Dispensing Storage Bucket Pressure Adjustable Tank 8Bar. Specification: Name: Stainless Steel Pressure Barrel Capacity: 2L Outer diameter: 133MM Inner diameter: 125MM Outer depth: 180MM Inner depth: 165MM Barrel thickness: 4MM Acrylic cover thickness: 12MM Maximum pressure: 8Bar Thread Diameter: 1/8 Weight: 4.5KG.