The 42 mm X 33 mm clear shrink bands are useful for a large selection of products and many of them include cork stoppers and 4 oz glass round and boston round bottles. These shrink bands create a more professional style to the packaging of a product and add a level of safety as well through a tamper-evident seal. These shrink bands do not cause great difficulty to the user when opening the product due to the single vertical perforation and they can be applied even more smoothly and evenly with our heat gun kit.