1. Material: magnetic stainless steel
2. Applicable scope: indoor doors, bedroom doors, etc.
3. Applicable door gap range: within 2mm
4. Selected materials, refusing easy rust damage and affecting strength
5. The position of the card hole can be adjusted according to the thickness of the door, regardless of the thickness of the door
6. Mechanical, door blocking principle, no need to punch holes, to meet the installation of different lock tongues
7. Small and portable, giving you a sense of security
8. Anti-violent door opening, hard and not easy to break
9. Size: 84x30mm; 20x43mm