Pickle Pipe airlocks are the easiest way to vent fermentation gas. The one-way valve automatically releases gas, without letting in any oxygen that can cause spoilage, so jars don't have to be babysat and manually burped daily. We recommend using this product with fermentation weights, like our Pickle Pebbles. If you're a beginner and also want recipes, checkout The Complete Fermentation Kit. Designed for Wide Mouth Mason/Canning Jars (Ball, Kerr, Bernardin, etc.)