Specification Binding : Misc. Brand : Century Spring Label : Century Spring Corp Manufacturer : Century Spring Corp PartNumber : C-287 ProductGroup : Home Improvement ProductTypeName : TOOLS Publisher : Century Spring Corp SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/119lOATPTTL._SL75_.jpg SmallImage_Width : 35 Studio : Century Spring Corp Title : Extension Springs, 5/16-In. OD x 5-In., 2-Pack