CleverDelights size 11 rubber stopper. Dimensions: 48mm x 56mm x 25mm tall (approx. 1 7/8" x 2 3/16" x 1"). General use hardware stopper. Solid rubber stopper, no hole. Tapered end stopper great for plugging containers, pipes, vials, stopping leaks, or using as equipment spacers. Made from natural rubber. Gray color. Durometer hardness is shore 65A. Size #11. Other sizes ranging from #0 to #13 also available in our store. Please see the additional pictures for a chart showing the sizes and specifications of all the rubber stoppers in our inventory.