## Common ground
All options describe fire pits made from different materials.
## Options at a glance
**6810.99 – Made of cement/concrete**
- **Defining trait:** Constructed primarily from cement, concrete, or artificial stone.
- **Typical examples:** Concrete fire pit rings, poured concrete fire bowls, resin-based stone fire features.
- **Best fit when:** The fire pit is cast in place or pre-formed from non-metallic, rigid, stone-like material.
**7321.1X – Made of base metal**
- **Defining trait:** Constructed primarily from iron, steel, or other base metals (e.g., carbon steel).
- **Typical examples:** Steel fire bowls, welded iron fire pits, cast iron fire rings.
- **Best fit when:** The fire pit is made of metal, especially if it’s welded, sheet-formed, or has a metallic structure.
## Key differences
| Feature | 6810.99 – Cement/Concrete | 7321.1X – Base Metal |
|---------------------|-------------------------------|--------------------------------|
| Material | Non-metallic (concrete/artificial stone) | Metallic (steel, iron, etc.) |
| Heat resistance | High (inherently non-flammable) | Moderate to high (depends on thickness) |
| Portability | Fixed or heavy | Often portable or lightweight |
## How to choose
- Is the fire pit made of concrete, stone, or a similar rigid non-metallic material? → 6810.99
- Is it made of steel, iron, or another base metal (e.g., welded sheet metal)? → 7321.1X
## Overlaps & pitfalls
A fire pit with a concrete outer shell and metal liner could technically fit both. However, the **primary material** determines classification. If the structure is mostly metal, use 7321.1X; if mostly concrete or stone, use 6810.99. No option is vague—both are clear based on material composition