This hobby horse spring from Prime-Line is constructed from 0.125 gauge, heat-tempered, spring steel wire plated in a bright nickel finish. It offers superior strength and long lasting tension. This spring features a single loop, open-ended design and measures 5-1/2 inch in length by 1-1/16 inch in diameter. This type of spring can be used to replace most hobby horse springs and works for a variety of other household applications.Brand Name: Prime-Line Length: 5-1/2 in. Diameter: 1-1/16 in. Spring Type: Hobby Horse Extension Product Type: Spring Number in Package: 1 pk Packaging Type: Bulk Material: Steel Finish: Nickel-Plated End Type: Single Loop, Open