The drums made by HDPE,high strength,corrosion-resistance and good sealing.The drums meet with the follow standards: UN1H1/Y1.9/150 (Test Report P124) UN 1H1/Y1.4/150 with vent (Test Report P125) High density polyethylene, much lighter than steel Meets UN Specifications for hazardous liquids FDA and USDA compliant Blow molded high molecular weight high-density polyethylene drums Seamless construction Compatible with a wide range of products Colors are molded-in - won't rust, dent, fade or peel 15 Gallon drums 2" NPS plug One 3/4" NPS plug Molded swing handle 30 and 55 Gallon drums 2" NPS plug One 2" buttress plug with 3/4" NPT reducer