13.4 x 8.5 x 3.2 inches

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Mason jar fermentation kit with leak proof gasket made from durable plastic with a leak proof gasket, bpa-free, let gas escape, and prevents contaminants from entering, homemade fermented vegetables with more probiotics, dishwasher safe
Use vacuum pump to pump air out from jars by connecting built-in one-way valve in the middle, extruding the mason jar airlock valve in the middle when fermentation finish, and the anti-slip release tabs at the edge help you open the jar easily