## Common ground
All options are nasal aspirator tips, used to clear mucus from a baby’s or child’s nose.
## Options at a glance
**3924.90 – Plastic material**
- **Defining trait:** Made from rigid or semi-rigid plastic, often disposable and lightweight.
- **Typical examples:** Silicone-like soft plastic tips, single-use medical-grade plastic.
- **Best fit when:** Reusable or single-use design is preferred; cost-effective, hygienic for frequent use.
**4014.90 – Rubber**
- **Defining trait:** Made from flexible natural or synthetic rubber, often more pliable and soft.
- **Typical examples:** Soft rubber bulb tips, traditional rubber nasal aspirator nozzles.
- **Best fit when:** Flexibility and gentle contact with delicate nasal tissue are key; long-term use in reusable devices.
## Key differences
| Feature | 3924.90 (Plastic) | 4014.90 (Rubber) |
|------------------|--------------------------|----------------------------|
| Material feel | Firmer, less flexible | Softer, more pliable |
| Reusability | Often single-use | Often reusable |
| Durability | Less prone to tearing | Can degrade over time |
## How to choose
- Is the tip made of a rigid or semi-rigid material? → 3924.90
- Does it feel soft and flexible like rubber? → 4014.90
## Overlaps & pitfalls
Some plastic tips (e.g., medical-grade silicone) may feel soft but are still classified under 3924.90. Rubber tips may be labeled as “synthetic rubber” but fall under 4014.90. The main difference is material type, not feel alone. If unsure, prioritize the **material’s primary composition**—plastic vs. rubber