## Common ground
All options describe keyrings or key cases based on their primary material composition.
## Options at a glance
**3926.90 – Plastic material**
- **Defining trait:** Made primarily from plastic, including molded or injection-molded forms.
- **Typical examples:** Plastic keychains with logos, simple plastic rings.
- **Best fit when:** The product is lightweight, mass-produced, and clearly made of synthetic polymer.
**4202.3X – Leather or composite materials**
- **Defining trait:** Constructed from leather, composition leather, or covered with textiles, plastics, paperboard, or vulcanized fibre.
- **Typical examples:** Leather key cases, fabric-wrapped key rings, wallet-style key holders.
- **Best fit when:** The product has a soft, flexible, or textured surface resembling leather or fabric.
**4421.9X – Wood**
- **Defining trait:** Made from solid wood or wooden components.
- **Typical examples:** Wooden key fobs, carved wooden rings.
- **Best fit when:** The product is visibly made of natural wood with grain visible.
**7113 – Incorporating jewellery or precious metal**
- **Defining trait:** Contains jewellery elements, precious metal, or metal clad with precious metal (e.g., gold/silver plating).
- **Typical examples:** Gold-plated keychains, gemstone-embedded key rings.
- **Best fit when:** The item includes decorative or high-value metal components beyond basic function.
**7326 – Iron or steel**
- **Defining trait:** Made from iron or steel, often with a heavy-duty or industrial feel.
- **Typical examples:** Steel key rings, industrial-style key holders.
- **Best fit when:** The product is strong, metallic, and visibly ferrous.
**7616.99 – Aluminium**
- **Defining trait:** Made from aluminium, typically lightweight and corrosion-resistant.
- **Typical examples:** Anodized aluminium key rings, minimalist metal keychains.
- **Best fit when:** The product is light, shiny, and non-magnetic.
**7907.00 – Zinc**
- **Defining trait:** Made from zinc, often used in die-cast or plated forms.
- **Typical examples:** Zinc alloy key fobs, decorative cast key rings.
- **Best fit when:** The product is small, detailed, and has a metallic finish with moderate weight.
**8007.00 – Tin**
- **Defining trait:** Made from tin or tin alloys, often used in thin, soft, or decorative forms.
- **Typical examples:** Tin-plated key rings, vintage-style keychains.
- **Best fit when:** The product is soft, malleable, or has a traditional/artisanal look.
**8104.90 – Magnesium**
- **Defining trait:** Made from magnesium, known for being very light and strong.
- **Typical examples:** High-end, lightweight military-style key rings.
- **Best fit when:** The product is exceptionally light but durable, often used in premium gear.
## Key differences
| Material | Weight | Durability | Appearance | Common Use Case |
|----------------|----------|------------|--------------------|----------------------------|
| Plastic | Light | Low–Medium | Colorful, molded | Everyday, low-cost use |
| Leather/Textile| Medium | Medium | Natural, soft | Fashion, personal style |
| Wood | Medium | Medium | Natural grain | Crafted, rustic design |
| Precious Metal | Heavy | High | Shiny, luxurious | Luxury, gift items |
| Iron/Steel | Heavy | High | Matte, industrial | Durable, outdoor use |
| Aluminium | Light | High | Sleek, shiny | Premium, minimalist design |
| Zinc | Medium | Medium | Dull, plated | Decorative, mass-produced |
| Tin | Light | Low | Soft, vintage | Nostalgic, decorative |
| Magnesium | Very light | High | Metallic, modern | High-performance gear |
## How to choose
- Is it made of plastic? → 3926.90
- Does it feel like leather, fabric, or paperboard? → 4202.3X
- Is it visibly made from wood? → 4421.9X
- Does it contain gold, silver, or gemstones? → 7113
- Is it heavy and metallic with a dark or matte finish? → 7326
- Is it light, shiny, and non-magnetic? → 7616.99
- Is it soft, malleable, or vintage-looking? → 8007.00
- Is it very light and strong, often used in premium gear? → 8104.90
- Is it made of zinc alloy with detailed casting? → 7907.00
## Overlaps & pitfalls
- A keyring may be **plastic-covered leather** (fits both 3926.90 and 4202.3X). Prioritize the **main material** (e.g., if leather is dominant, use 4202.3X).
- A **zinc-plated steel ring** could fit 7326 or 7907.00. Use the **primary structural material**.
- **Magnesium and aluminium** are both light metals; distinguish by material type (magnesium is rarer and lighter).
- If multiple materials are present, choose based on the **main functional or visible material**