1. Simple to use and easy to install. 2. This door handle is made of high quality copper. Ideal for bedrooms, living rooms, bathrooms and more. 4. Simple and elegant appearance, perfect for beautifying your home. 5. This product has been processed through multiple processes, safe and environmentally friendly material, you can use it with confidence. Features: Material: copper. p> Surface treatment: copper double spinning and polishing Ball shape: big ball. Lock cylinder: pure copper lock core. Installation distance: 35mm-50mm. Locking tab: 60/70 mm. The center distance is the distance between the edge of the door and the middle of the locking ball latch hole. Measure the bolt length, the bolt length is 50mm and center distance is 60mm; the bolt length is 60mm and the center distance is 709 wooden door. Note: Due to the light and screen setting difference, the product color may be slightly different from the picture. As the manual measurement is different, please allow a slight size difference. Shipping Quantity: 1 piece