Fiber Disc: 5" Disc Dia, 7/8" Hole, 50 Grit, Silicon Carbide MPN:01-1021

The extension spring, with an outer diameter of 0.5 inches, has a length of 8.38 inches when extended, making it ideal for various industrial uses such as garage doors, chair lifting mechanisms, and car trunks. It features a wire diameter of 0.055 inches, ensuring durability and strength. The compression spring design allows for even force distribution throughout its entire length while minimizing stress concentrations, making it an essential component in various spring applications. Additionally, extension springs like this one are typically used by machinists, engineers, and mechanical technicians when developing and repairing machinery that requires spring tension or force. With its reliable performance, this extension spring is a useful tool for enhancing convenience in everyday use.