Can Fresh Aluminum Beer Cans - 11.1 oz - Case of 300 CansAluminum cans offer 100% protection from UV and other wavelengths of light that is harmful to beer. Seamed cans form a much better seal than bottles, which can prevent these issues. Aside from better protection, aluminum cans are the safest option for sharing and enjoying your homebrew. Cans of homebrew can be taken anywhere, without the worry of breaking the glass. To use these cans with the Cannular Can Seamer you will also need the CAN103 table