These are sponges for cleaning beer hoses of beer servers. I think there are about 100 pieces per sponge. This is a set of 2. It's cheaper because it's a set. If you want more, please comment. The more sets you buy, the cheaper it gets. When used for cleaning draft beer lines with water, they remove dirt from the inside of the hose, making it less likely for the beer quality to deteriorate. Instant purchase available.