Description Do you need portable and usefulrubber test tube plug? If so, take a quick look at this item. Made of rubber materials, practical and excellent. Simple look design and exquisite craftsmanSHLP ensure its popularity and practicality, excellent durability. Features -Color:White-Material:Rubber-Size:2.00X1.30X1.30cm/0.79X0.51X0.51in-Note: without hole, upper diameter: 15mm, lower diameter: 11mm-Versatile and useful, suitable for test tubes, conical flasks, and laboratory flasks, meeting various experimental needs.-Flask stopper is made of rubber material, useful and sturdy, practical and excellent for longer time.-Useful design, test tube plug is convenient and practical to use,excellent sealing performance. -Wonderful workmanSHLP, simple design, reasonable structure, small size, flask plug is proper for laboratory use.-Test tube stopper is simple to install, easy to remove, convenient for replacement use.Packing list: 10 x rubber test tube plugs