From Singer 648E Touch & Sew sewing machine. Thread tension assembly (Singer Part # 163947) complete. Used but working condition. Will work on Singer 648 Model Touch & Sew machines and many common parts for other 645. 646, & 640 machines (but different Singer # {136545}). Includes thread guide #163938 and screw #329-807 (numbered for all Model 648's and tension dial set screw.#141766. Working replacement parts, genuine Singer.