You can 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! Wrap the thread’s cut ends around each rod’s polymer center and gently pull. You will feel the thread “give” or relax. 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, allow us to choose, currently the straighteners on hand are multi-colored.