Use this pair of thread straighteners to remove kinks, curls or folds from synthetic thread, silk twisted thread and monofilament thread. No more wetting or ironing! Just wrap the thread's cut ends around each rod's polymer center and gently pull. You will feel the thread "give" or relax. Then like magic the thread is straight and smooth. You do not have to pop or yank the thread, which may cause damage to the fibers. You can always re-pull the thread if it isn't perfectly straight after the first time. Assorted colors.