This is the Wide Mouth version of the original mason jar pour cap! Making mason jars more usable than ever, this BPA-free plastic cap is designed to coordinate with the charming vintage zinc caps. Spill-proof and top rack dishwasher safe. Do not place in microwave. Jars not included. Perfect for organizing and transforming mason jars into beverage containers. Shake, Pour, Store: - grains and cereals - maple syrup, honey, milk... - homemade dressing - household cleaners. Set includes 4 Wide Mouth caps..