McKesson Tube Closure Polyethylene Snap Cap Gray 12 mm / 13 mm / 16 mm (Universal) For Most 12 / 13 / 16 mm Evacuated Glass Blood Collection Tubes and Plastic Test Tubes NonSterile (1082090_BG) 1000/BGFor use with 12, 13 and 16 mm evacuated glass blood collection tubes and plastic test tubes Designed for easy on and easy off use, featuring double thumb tabs. Flexible closures protect from aerosols of highly infectious microorganisms. Guard samples against cross contamination and laboratory work areas against infection and spillage. Precision molded, low density polyethylene (LDPE) designed to fit firmly on the tube Closures remain sturdy under most