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# CKOperationGroup.TransferSize

Constants that represent possible data transfer sizes.

```
enum TransferSize
```

## Topics

### Transfer Sizes

[`CKOperationGroupTransferSizeKilobytes`](/documentation/CloudKit/CKOperationGroup/TransferSize/kilobytes)

A transfer size that represents 1 or more kilobytes.

[`CKOperationGroupTransferSizeMegabytes`](/documentation/CloudKit/CKOperationGroup/TransferSize/megabytes)

A transfer size that represents 1 or more megabytes.

[`CKOperationGroupTransferSizeGigabytes`](/documentation/CloudKit/CKOperationGroup/TransferSize/gigabytes)

A transfer size that represents 1 or more gigabytes.

[`CKOperationGroupTransferSizeTensOfMegabytes`](/documentation/CloudKit/CKOperationGroup/TransferSize/tensOfMegabytes)

A transfer size that represents tens of megabytes.

[`CKOperationGroupTransferSizeTensOfGigabytes`](/documentation/CloudKit/CKOperationGroup/TransferSize/tensOfGigabytes)

A transfer size that represents tens of gigabytes.

[`CKOperationGroupTransferSizeHundredsOfMegabytes`](/documentation/CloudKit/CKOperationGroup/TransferSize/hundredsOfMegabytes)

A transfer size that represents hundreds of megabytes.

[`CKOperationGroupTransferSizeHundredsOfGigabytes`](/documentation/CloudKit/CKOperationGroup/TransferSize/hundredsOfGigabytes)

A transfer size that represents hundreds of gigabytes.

[`CKOperationGroupTransferSizeUnknown`](/documentation/CloudKit/CKOperationGroup/TransferSize/unknown)

An unknown transfer size.

## Relationships

### Conforms To

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`Equatable`](/documentation/Swift/Equatable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`Sendable`](/documentation/Swift/Sendable)

[`Hashable`](/documentation/Swift/Hashable)

---

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