1. The length can be stretched, easy to use and store 2. The mirror can be rotated 360 degrees for easy inspection 3. Carbon steel material, wear-resistant and durable, not easy to rust 4. Material: carbon steel 5. Purpose: automobile maintenance and inspection 6. Mirror diameter: 30/50mm 7. Length: about 24.8 cm of 50mm, which can be stretched to 75 cm, and about 16.6 cm of 30mm, which can be stretched to 55 cm 8. Weight: about 20g/piece for 30mm, about 50g/piece for 50mm