1. Material: plastic, metal 2. Application scene: car, home 3. L-shaped self-locking slot, convenient to clean the ash 4. Sealed corrosion resistance, flame retardant and high temperature resistance, smoke flavor does not proliferate 5. Rotate to open and close, to avoid flying ash 6. Usage: rotate counterclockwise to open, rotate clockwise to close 7. Clean and hygienic, easy to clean and reuse 8. Size: about 80 x 88mm 9. Weight: about 98g