Solid Rubber Lab Plugs 25 Pack (Same Size) Solid Rubber Stoppers - Size #2-20mm (0.78in 25 Pack Black Stoppers x Height) #1 19/14mm x 26mm Package includes #1 x 25 Kindly Tips:Some dust will be on the rubber stopper surface,just wash by water. 21 Pack Solid Rubber Stopper, Black Lab Plug, 000# - 8# Sizes Assortment, 11 Assorted Sizes 100 bought in past month Add to cart And pls put them in some place where the children cannot reach. See the seller's listing for full details. The United Scientific rubber stoppers we sell will fit all test tubes, based on the sizing chart listed here 25 Packs #1 rubber stopper Product Dimension (Top/Bottom Dia. Rubber Stopper, #4, 25mm, 1 hole - Shop now for high-quality Other sizes from #000 to #10 also available from Enjoyist on Amazon
