## Common ground
Both options refer to small components used to secure earrings in the earlobe.
## Options at a glance
**3926.90 – Plastic earring stoppers**
- **Defining trait:** Made primarily of plastic, often lightweight and flexible.
- **Typical examples:** Silicone or polyethylene backs for stud earrings.
- **Best fit when:** The product is made of non-metallic, soft or molded material; commonly used in fashion or hypoallergenic jewelry.
**7326.90 – Iron or iron/plastic earring backs and stoppers**
- **Defining trait:** Contains iron (metal), either pure or combined with plastic; typically more rigid and durable.
- **Typical examples:** Metal screw-backs or mixed-material clasps for heavier earrings.
- **Best fit when:** The product has a noticeable metallic component, especially iron, or is designed for sturdier wear.
## Key differences
| Feature | 3926.90 (Plastic) | 7326.90 (Iron/iron-plastic) |
|---------------------|--------------------------|-------------------------------|
| Primary material | Plastic (non-metal) | Iron (metal) or iron blend |
| Weight & feel | Light, flexible | Heavier, rigid |
| Durability | Lower | Higher |
## How to choose
- Is the back made mostly of plastic or rubber? → 3926.90
- Does it contain iron or a visible metal component? → 7326.90
## Overlaps & pitfalls
A product with an iron core and plastic coating may fit both. In such cases, prioritize based on the **main structural material**—if iron is the primary support, use 7326.90; if plastic dominates in form and function, use 3926.90. The HS Code does not specify a threshold for metal content, so the defining feature should be the product’s core material