Stopper, Stopper Size 16, Neck Size 50 mm, Screw Closure Size Not Applicable, Bottom Diameter 90 mm, Top Diameter 127 mm, Overall Height 50 mm, Material SBR Rubber, Product Type Stopper, Color Black, Autoclavable No, Number of Holes 1, Standards ASTM D2000, Special Features Not Applicable, Resists Abrasion and Water, For Labware Type Bottles, Vials, Liner Material Rubber, Hole Diameter 5 mm. This item has been restricted from sale in the following state (s): []