Specification for 3L: 3L Cylinder size: ø130mm * 370mm (H), V:4.2L, T: ≥ 1.2mm Valve body material: Hpb59-1 brassHandle: SUS 304 (length: 109mm; thickness 1.1mm) with hanging, including copper riser seat Pressure gauge diameter 37mm, with printing 100psi, but actually is 195psiAluminum siphonLength of black belt: 488mmLength of hose: 465mm Height of fluorescent ring:14.5mm Pin material: SUS 304Pin chain is black color, with length 110mmRed seal