High quality. This mounting tool is metal and plastic ABS. It is durable and reusable. The appearance of the screw is white zinc with ion veneer, which is simple and beautiful. Easy to install. The length of the screw can be adjusted according to the needs, and it can be easily attached to the four corners of the fence. No tool such as a wheel key is needed. No drilling. Turn the knob and the reaction force between the nut and the wall slowly fixes the barrier. One end of the screw is rubber to protect your wall or stairs from the damage. Suitable for most barriers. Once the barrier is fixed, you can prevent the baby or pet from getting out of the safety zone, the threaded rod adapts to most places (walls, stairs, wood, etc.). Warranty. We guarantee the quality of the products. If you encounter problems after receiving products, do not hesitate to contact us. We are also willing to repay you. Color: white Features - The high quality M10 threaded rod does not break under pressure . It firmly sets the barrier and protects the safety of children and domestic animals. - It is a special threaded rod for door railing / window railing and is suitable for most doors security and stair ramps. Ideal for fixing baby doors, pet doors, etc. - The metal screw and ABS are perfectly matched. Simple and beautiful. The installation distance is 2.5 cm to 7 cm. - This mounting rod can be installed quickly and easily without tools, which saves you time. It does not rust and is robust and durable. For families with children or pets, it's an ideal choice! Installation method 1. Insert 4 threaded rods into the holes of the 4 corners of the barrier. 2. Place the barrier and make sure it is perpendicular to the wall 3. Rotate the adjustment knob along the screw to adjust the length to remove the gap between the adjustment knob and the four corners of the barrier. Specification < p> Material: Metal + plastic Surface treatment: zinc white with ion veneer Weight: 72g / piece Length: 8cm Condition: brand new CAUTION Before you order a command, make sure the holes of the baby door are suitable for bolts M10 (10 mm). Package content 4 * Threaded rod