Description: Fitment: For This item is spiral springs that offer resistance to a tension force, or load, applied along the axis of the spring. When a load is placed on an extension spring, making it longer, the spring pulls back against the load to return to its original length. These springs are used in a variety of applications, including automotive engines, major appliances, medical devices, electronics, and sensitive measuring instruments. - Color: As pictures showed. - Material: galvanized steel. - Dimensions: Diameter 4 - 9.5mm/0.16-0.37 inch. - Length 10 - 79.5mm/0.39-3.13 inch. - Great resilience and for durable use. - Greater resistance to corrosion.K22 13/64" x 13/16", 7/32" x 1", 1/4" x 7/8", 5/16" x 1-1/8", 5/16" x 1-1/4", 5/16" x 1-3/4", 11/32" x 1-27/32". 9/32" x 2-13/16", 5/32" x 3-1/8", 3/16" x 1-3/4", 9/32" x 1-1/2", 11/32" x 1-7/16" Package Include: 200PCS Spring assortment Spiral Spring Galvanized Spring Set Spring Rate Extension Spring