api-docs/docs/node-tracker/markdown/node-tracker.addtocartevent.sku.md
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[Home](./index.md) > [@snowplow/node-tracker](./node-tracker.md) > [AddToCartEvent](./node-tracker.addtocartevent.md) > [sku](./node-tracker.addtocartevent.sku.md)
## AddToCartEvent.sku property
A Product Stock Keeping Unit (SKU)
<b>Signature:</b>
```typescript
sku: string;
```