Used to provide a positive seal on your carboy. The #10 Drilled Stopper works well with Better Bottles and Bubbler PET fermentors.

Drilled hole for airlocks

Top Diameter: 1.969″

Bottom Diameter: 1.654″

Not sure if this is the correct stopper for your purposes? Consult our stopper information table below:

Stopper Type Compatible With: No. 2 Drilled Stopper Standard Beer bottles No. 5 Drilled Stopper Big Mouth Bubbler EVO 2 w/screw-on lid (older EVO 2 models) & Little BMB No. 6 Stopper Drilled or Solid 1 Gallon Jugs No. 6.5 Stopper Drilled or Solid Glass carboys, Big Mouth Bubbler plastic (5 or 6.5 gallon) or EVO 2 w/ Universal Lid. Ideal fit is 6 gallon carboy. No. 7 Drilled Stopper 5 Gallon glass carboys No. 10 Drilled Stopper PET Plastic Carboy 5 or 6 gallon Small Universal Stopper – Drilled or Solid Glass Carboys (3, 5, 6, 6.5), Big Mouth Bubbler Plastic 5 or 6.5 gallon or EVO 2 w/ Universal Lid. Medium Universal Stopper – Drilled or Solid PET Plastic Carboy 5 or 6 gallon

California Proposition 65

Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.