Product Review

6 Pack - Size 4 rubber stoppers. These premium CleverDelights stoppers are ideal for plugging test tubes, laboratory vials and containers. Made from natural rubber and ships from a USA warehouse. Great for lab, household, and industrial use. Black color. Dimensions: 26mm x 19mm x 28mm tall (Approx. 1 1/32" x 3/4" x 1 1/8"). Other sizes ranging from #000 to #14 also available on Amazon. See the 2nd picture for a table of all the sizes we carry.