Gudebrod Thread Company, established in 1870, is the first manufacturer, in the world, to produce artificial/imitation sinew since the 1950?s. It was and still is now proudly produced in USA by an American family owned and operated company. With over 65+ years of experience manufacturing artificial sinew, they have perfected the color and process of waxing while using premium polyester yarn to create the best quality man made sinew in the world.