Made from nylon , metal , and hard , this bottom pivots hinge and metal plate are and This set of 2 pair of umbrella-shaped screws with fixed door bolts is the perfect replacement for your folding door hardware Upgraded your folding door hardware with this and set of 2 pair of umbrella-shaped screws with fixed door bolts The simple-to-install bottom track with an additional pivots pin makes it a small wind to upgraded your folding door hardware Suitable for enthusiasts and homeowners looking to their homes folding door with new hardware, Manufacturer: Watreketal