2 set Home brewed craft beer wine exhaust valve set: 1 set A & 1 set BCONVENIENT AND SAFE: The 3-piece airlocks Fermentation are made of PP plastic that are BPA free. And the grommet is made of silicone. It enables you to keep your foods super healthy and probiotic.CLEAR, STURDY AND LONG-LASTING: Each airlock is made of crystal-clear, strong plastic and assembled with a foam insert to prevent damage during transportVERSATILE: Airlocks many varieties of fermentation projects. Here's a short list: Brewing craft beers, Wine-making, Sauerkraut, Kimchi, Hard cider, Fruit wine, Rice wine, Spicy cabbage with cauliflour, Shredded carrots and ginger, PicklesGREAT USE AND EASY CLEANING: Drill a 1/2 inch hole on your fermenter lid. Then insert the black grommet into the lid hole. Place the tapered tip of the airlock into the grommet hole to seal up the bottle. The airlock kit allows gas bubbles to escape during the fermentation while preventing oxygen from ruining your fermentation and beer brewing. The 3-piece airlock can be disassembled, and cleaned completely by a small brush. You can soak in bleach water to disinfect the airlock kit.Brewing airlock can be used wine making, beer brewing, fermenting sauerkraut, kimchi that can satisfy your daily fermentation need.Simple to press the stopper onto the carboy, insert the beer airlock to the stopper, pour some water into airlock and cover the lid to complete all operations.Brewing airlock makes easier the fermentation caused it could effectively isolate the air to prevent oxidation and allow the whole fermentation process to be automatic fermentation and exhaust at normal temperature without manual control.Easy operation healthy fermentation foodIsolate the air to prevent oxidation to allow automatic fermentationSuitable preserving, brewing, making wine, beer, fermenting sauerkraut, kimchiSize:11.5 x 3.8cm & 121 x 34mmOuter diameter: 1.59cmMaterial:Plastic + rubberColour:Transparent + blackPackage Contents:10 * exhaust valve6 * No. 3 stopper (17 x 23 x 26mm)8 * sealsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.