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 durable 4. Thickening and thickening, non-dislodging insurance clips, strong anti-theft performance 5. 3mm thickened chain, twisted welded tightly, not easy to break, anti-prying and tear-resistant, durable 6. The size of the window depends on the installation position, the greater the distance between the staggered, the smaller the window space 7. Simple installation, wide range of applications, suitable for a variety of scenes, but also your safe and comfortable living environment 8. 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 56g 9. Size: square about 8.55 x 3.9cm, round about 8.65 x 3.7cm, chain length about 18.7cm, hole diameter about 5mm
1. 材质：不锈钢（方形）、冷轧钢（圆形） 2. 适用范围：木门、铁门、窗户、宾馆门等 3. 采用不锈钢/冷轧钢打造，防水防锈，美观耐用 4. 加粗加厚，不脱落保险卡扣，防盗性能强 5. 3mm加粗链条，扭转焊接紧密，不易断裂，防撬耐扯，经久耐用 6. 开窗大小依安装位置而定，错开距离越大，开窗空间越小 7. 安装简单，应用广泛，适用于多种场景，还您安全舒适的居住环境 8. 重量： 方形黑色约74.1g、方形银色约68.2g、方形红古铜色约72.5g、圆形金色约58.2g、圆形青古铜色约60g、圆形银色约56g 9. 尺寸：方形约8.55 x 3.9cm，圆形约8.65 x 3.7cm，链条长约18.7cm，孔径约5mm
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