The Manchester Tank Propane Cylinder conforms to DOT and NFPA-58 specifications and is triple tested with dry pneumatic air and steel shot blasted prior to painting. The Manchester Tank Propane Cylinder has powder coat paint for maximum rust protection and a handle-EZ collar design – the only collar with a built-in, formed handle with no sharp edges. Every Manchester Tank Propane Cylinder includes consumer warning decals that are easy to read for your protection.