## Common ground
Both options refer to small hardware fittings used to guide or pass cords, wires, or threads—commonly called "eyes" or "eyelets."
## Options at a glance
**3926.90 – Made of plastic material**
- **Defining trait:** Constructed primarily from plastic, often lightweight and corrosion-resistant.
- **Typical examples:** Plastic grommets in bags, fabric eyelets on backpacks, plastic cable guides.
- **Best fit when:** The product is non-metallic, flexible, or used in low-stress environments like textiles or consumer goods.
**8308.10 – Made of base metal**
- **Defining trait:** Constructed from metals like steel, brass, or iron, typically more durable and load-bearing.
- **Typical examples:** Metal eyelets in boots, industrial harnesses, marine rigging.
- **Best fit when:** The product must withstand high tension, wear, or harsh conditions.
## Key differences
| Feature | 3926.90 (Plastic) | 8308.10 (Base Metal) |
|------------------|--------------------------|----------------------------|
| Material | Plastic | Steel, brass, iron |
| Durability | Low to moderate | High |
| Use case | Light-duty, non-metal | Heavy-duty, structural |
## How to choose
- Is the product made of plastic? → 3926.90
- Is it made of metal (e.g., steel or brass)? → 8308.10
## Overlaps & pitfalls
A product could be both if it has a plastic body with a metal insert, but such cases are rare and should be classified by the dominant material. The defining trait is the primary material—plastic vs. base metal. If unclear, prioritize the material that forms the main structural part