1. Material: zinc alloy
2. Suitable for door gap: 5-50mm
3. Suitable for door thickness: 30-50mm
4. No need to drill holes for installation, no damage to the floor and door, rotate to adjust the height
5. Adopts highly molded metal structure, durable
6. Compact size, can pass security check, easy to carry around
7. Working principle: high strength metal structure, the force of pushing the door to the ground to form an equal amount of reaction, so as to effectively prevent violence to open the door
8. Size: 120 x 87mm
9. Weight: 240g