Rubber Stopper, #00, 15mm, 1 hole

These rubber stoppers are of high quality, soft, resilient rubber. Diameter is for the 15mm test tubes, and hole is for the 6mm glass tubing. 

These stoppers are size 00 and are drilled with one hole. Size 00 stoppers have top diameter of 15mm, a height of 25mm, and a bottom diameter of 10mm.