Every house has at least one 5 gallon pail lying around that used to contain detergent, paint, etc. Why throw away a perfectly good bucket when you can turn it into genuine useable storage? Don't throw away those like-new laundry detergent buckets; put them to good use with Gamma Seal! The Gamma Seal lid permanently transforms your 12 inch diameter bucket into an airtight/leak proof storage container. Now a bucket can be used for hundreds of household and other storage applications! Simply snap the patented adapter onto your bucket and spin-on the removable lid. Specially engineered gaskets ensure that the lid and adapter are properly sealed to guarantee airtight protection. I have many of these at home and they keep things organized. I have one for cat food, one for my rock salt, one for lawn fertilizer, one for a diaper pail, one on the boat, and a few others. All you do is snap the adapter onto your pail, spin on the lid, and that's it. One quick spin and it's open, closes air/watertight in seconds! No more prying off those difficult lids. The Gamma Seal lid fits virtually any 3.5-7.0 gallon bucket (including 20 liter).