# FILE_VOLUME_TRANSFER

`import { FILE_VOLUME_TRANSFER } from "destack:fs/binding";`

Request transfer size fields.

```ds title="FILE_VOLUME_TRANSFER"
const FILE_VOLUME_TRANSFER: FileVolumeMask
```

[language/library/src/fs/binding/volume.ds:13](https://github.com/destack-sh/destack/blob/main/language/library/src/fs/binding/volume.ds#L13)