What you will get: The package contains 4 pieces of black threaded spindle rods, the size is M10*80mm, the quantity is enough to meet your daily use needs, it is a fixing assistant for most safety gates and railings. Product material: The threaded spindle rod is made of high-quality iron and PP material, which is strong and thick, wear-resistant, has a long service life, and can serve you for a long time. Easy to install: Threaded spindle rods are easy and convenient to install, no other tools, no drilling, and no worries about damaging your walls. You just turn the nut so that it reacts against the wall. Multifunctional: This threaded spindle rod can form a strong friction force with the surface of the object, which can firmly fix the safety door, not easy to slide, and ensure the safety of children and pets. The threaded spindle rod is perfect for pet doors, baby doors, wooden stair doors, etc. It holds the door in place while protecting walls and stairs from damage. Note: This threaded spindle rod is suitable for M10 spindle hole and cannot be matched with other size screws, please confirm the spindle hole size of the safety door before purchasing.Manufacturer: SZCXDKJ Specification: Name: Threaded Spindle Rod Unit quantity: 4 pieces Material: iron, PP material Size: M10*80mm Colour: Black Features: Easy to install, strong friction, can firmly hold the safety door Application: Suitable for all kinds of pet doors, baby doors, wooden stair doors, etc.