api-docs/docs/node-tracker/markdown/node-tracker.ecommercetransactionitemevent.quantity.md
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[Home](./index.md) > [@snowplow/node-tracker](./node-tracker.md) > [EcommerceTransactionItemEvent](./node-tracker.ecommercetransactionitemevent.md) > [quantity](./node-tracker.ecommercetransactionitemevent.quantity.md)
## EcommerceTransactionItemEvent.quantity property
The quanity of this product within the transaction
<b>Signature:</b>
```typescript
quantity?: number;
```