McKesson Tube Closure Polyethylene Snap Cap Yellow 12 mm / 13 mm / 16 mm (Universal) Fits Most 12mm, 13mm and 16mm Evacuated Glass Blood Collection Tubes and Plastic Test Tubes NonSterile (1082096_BG) 1000/BGTube closures are just what you need for recapping most 12 mm, 13 mm and 16 mm evacuated glass blood collection tubes. Double thumb tabs make for easy on and easy off use. 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