Security Door Chain Anti-theft Home Door Bolt Latch Window Chain Lock, Style: Square Black

1. Material: stainless steel (square), cold rolled steel (round)2. Scope of application: wooden doors, iron doors, windows, hotel doors, etc.3. Made of stainless steel/cold rolled steel, waterproof and rustproof, beautiful and durable4. Thickening and thickening, non-dislodging insurance clips, strong anti-theft performance5. 3mm thickened chain, twisted welded tightly, not easy to break, anti-prying and tear-resistant, durable6. The size of the window depends on the installation position, the greater the distance between the staggered, the smaller the window space7. Simple installation, wide range of applications, suitable for a variety of scenes, but also your safe and comfortable living environment8. Weight: square black about 74.1g, square silver about 68.2g, square red bronze about 72.5g, round gold about 58.2g, round bronze about 60g, round silver about 56g9. Size: square about 8.55 x 3.9cm, round about 8.65 x 3.7cm, chain length about 18.7cm, hole diameter about 5mm