## Common ground
All options describe monitor arms made from metal, designed to support and position computer monitors.
## Options at a glance
**7326.90 – Made of iron or steel**
- **Defining trait:** Constructed primarily from iron or steel, offering high strength and durability.
- **Typical examples:** Heavy-duty monitor arms for dual monitors, industrial workstations.
- **Best fit when:** Need maximum load capacity, stability, and resistance to vibration.
**7616.99 – Made of aluminium**
- **Defining trait:** Built from aluminium, providing lightweight construction with good strength-to-weight ratio.
- **Typical examples:** Adjustable arms for home offices, portable setups, ergonomic desks.
- **Best fit when:** Portability, ease of installation, and sleek design are priorities.
## Key differences
| Feature | 7326.90 (Iron/Steel) | 7616.99 (Aluminium) |
|------------------|------------------------|-----------------------|
| Weight | Heavy | Light |
| Load capacity | High | Moderate |
| Durability | Very high | Good |
| Cost | Generally lower | Higher |
## How to choose
- Is the arm intended for heavy monitors or frequent adjustments? → 7326.90
- Is portability or a lightweight design essential? → 7616.99
## Overlaps & pitfalls
A monitor arm may use both materials (e.g., aluminium base with steel joints), but the primary material determines classification. If unclear, prioritize the main structural material. No option is inherently better—choice depends on use case