Use these bottle cappers for Domestic and International beers, 12 oz. and 16 oz. bottles. A plastic tab on the carrier grips under the bottle cap for a secure fit. Rubber bands (sold separately) can be used around the base of the bottles to prevent them from clanking together. These cappers are sold in quantities as small as 250/case. Quality products, wholesale prices and fast service is what you can expect from Pak-it Products.