Universal Rubber Stopper - Size #6-7 (With Hole)

You'll be amazed by the versatility of this stopper! Here are its top features: • Fits multiple container sizes, including 2.8, 3, 5, 6, or 6.5 gallon glass carboys, 500ml Erlenmeyer flasks, and most bottles. • Longer taper and different material prevent popping out when wet. • Not suitable for plastic carboys, Better Bottles, or Speidel Plastic Fermenters. Get yours now and experience the difference!

This versatile rubber stopper is great for home brewers and laboratory enthusiasts. It can be used to seal various glass containers like glass carboys and Erlenmeyer flasks. The stopper is size #6 - 7 and has a hole in it. Just note it won't work with plastic containers.