[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Cast](./puppeteer.protocol.cast.md) > [Sink](./puppeteer.protocol.cast.sink.md) > [id](./puppeteer.protocol.cast.sink.id.md) ## Protocol.Cast.Sink.id property Signature: ```typescript id: string; ```