Warm tips: in order to ensure the safety of use and avoid the bottle bursting due to the high air pressure in the bottle, this product is equipped with a safety air pressure device, when the inflation pressure exceeds the safety value, it will not continue to pressurize (do not continue pressurize in other ways, which may lead to bottle explosion). It is recommended to use other bottle opening tools to continue bottle opening. If you mind such a small probability event, please purchase with caution.