For safe transport of acids, alkalies and solvents in 2.5 L or 4 L (1 gallon) bottles (larger carrier) or 500 ml and 1L bottles (small carrier). Excellent tensile strength for use from -45°C to 110°C. Can be steam sterilized. Centering ring in the base assures 1"" clearance between bottle and carrier wall. Molded-in handle for comfortable grip. Withstands 150 lb. pull.