2-Hole Black Natural Rubber Laboratory Stopper Size 2 – 13 Stoppers
2-Hole Natural Rubber Laboratory Stopper. #13 Top: 68mm Bottom: 58mm. #2 Top: 19.5mm Bottom: 15.5mm. #3 Top: 25mm Bottom: 17.5mm. #4 Top: 26mm Bottom: 20mm. #5 Top: 27mm Bottom: 23mm. #6 Top: 32mm Bottom: 25mm.