> ## Documentation Index
> Fetch the complete documentation index at: https://docs.batchrelay.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Metal Keychain

> Order one two-sided metal keychain from separate prepared front and back assets.

`metal-keychain` revision `1` produces one 2.375 × 1.75 inch keychain per
quantity.

| Required role | Exact ratio | Example prepared pixels |
| ------------- | ----------- | ----------------------- |
| `front`       | `15:11`     | 3000 × 2200             |
| `back`        | `15:11`     | 3000 × 2200             |

```json theme={null}
{
  "product": { "id": "metal-keychain", "revision": 1 },
  "quantity": 1,
  "assets": [
    { "role": "front", "url": "https://cdn.example.com/orders/metal-front.jpg", "pixel_width": 3000, "pixel_height": 2200 },
    { "role": "back", "url": "https://cdn.example.com/orders/metal-back.jpg", "pixel_width": 3000, "pixel_height": 2200 }
  ]
}
```

The `15:11` geometry is specific to this product. Do not substitute an acrylic
keychain image even when its physical dimensions appear similar.