Product Description Pack of 50 orange assorted rubber stoppers, with one 5mm diameter hole. The pack contains the following quantities and sizes (bottom diameters): 7 stoppers each of sizes 8mm, 9mm, 11mm, 13mm, 15mm. 3 stoppers each of sizes 17mm, 21mm, 23mm, 25mm, 29mm Made of superior quality, long lasting rubber, and resistant to acids, alkali and ammonia. Pack of 50 assorted orange rubber stoppers each with one 5mm diameter hole. Made of superior quality, long lasting rubber that is resistant to acids, alkali and ammonia. Contains the following quantities and sizes (bottom diameters): 7 stoppers each of 5 different sizes: 8mm, 9mm, 11mm, 13mm, 15mm3 stoppers each of 5 different sizes: 17mm, 21mm, 23mm, 25mm, 29mm
