Du-Bro 379 4-40 Fully Threaded 12" Rod Can be used in conjunction with Du-Bro nylon or steel Kwik-Links or with ball links where extra long pushrods are needed. Bendable and strong. Rods are fully threaded (.093" rods w/4-40 thread). Fully threaded rods are stainless steel, perfect for making custom lengths for your needs. Made in USA