A fastener is an important component used to fix the rail in railways. Defects in this component cause the rail and ballast to remain unstable. If the defective fasteners are not replaced in time. it is inevitable that the train will derail. https://www.diegojavierfares.com/amazing-find-Bonnet-Protector-Guard-Suits-Holden-Calais-VT-VX-8-1997-9-2002-H260B-hot-choice/