Made of high quality durable metal, it helps identify callers before the door is completely released and forcibly stops entry The compact design allows you to adapt to any style and adjust the size of the door at the same time, making your door fresh and modern Large bottom plate: 122 22 mm (length width); Small bottom plate: 62 22 mm (length width); Chain Length: 165mm Easy to install, including four mounting screws, no additional screws required Package Content: 1 x Door Chain with Screws Features: 100% brand new and high quality Specifications: 1. Type: Lock Latch 2. Material: Stainless Steel 3. Style: Modern 4. Color: Silver 5. Occasion: Door Lock Accessories Note: 1. There are dimensional errors due to manual measurement 2. Please note that due to lighting effects and display brightness/contrast settings etc. 3. The color of the photo may differ slightly from the actual item Packages included: 1 bar