Kit includes 1 sauerkraut pound + 4 glass weights + 4 water airlocks Easy Wide-Mouth Jar Vegetable Fermentation Kit - for 80mm Mason Jars。 Made of European imported beech wood, the surface is treated with special technology, no cracking, no corrosion, no peculiar smell, strong and durable. Glass weights are made of food-safe glass that is lead-free and non-porous, so it won't absorb the smell, taste, or color of your food. The handle design makes it easy to get those weights out of your mason jar and provides a more stable solution than other grooved weights. Buying a kit is a better deal than buying a glass yardage, sauerkraut pound or water seal airlock individually, KUNNV always saves you more. If you have better suggestions for KUNNV products, please write to us, it will be greatly appreciated.