The lid has safety, perforated circle, which identifies opening of the bottle. The main usage of those lids are for PET bottles for milk, yoghurt and ripened drinks, juices, fruit juices, etc. The inner diameter is 38mm. The lid meets product requirements for food and drink products specified by article 16 EP regulations and council (ES), no. 1935/2004, code no. 258/2000 Col. and addition V., appendix Mze CZ no. 38/2001 as amended by latest regulations.