This pen is perfect to use in between professional cleanings. It is easy to use with instructions on the label. Keep your jewelry looking great all the time with our Joden cleaning pen. It is safe and effective on all metals and most gem stones (not recommended for amber and Ethiopian opals). It's a click pen with a brush tip and a locking mechanism and biodegradable cleaning fluid. If purchased alone, this pen will ship USPS. If purchased as an add-on, it will ship with your jewelry items.