The JoyKey®, a quality product made in Germany, is a revolutionary new solution for effortlessly and effectively removing water from brass instruments.The heart of the JoyKey® is the the high-tec WaterWick® replaceable metal filter. Moisture in brass intruments gravitates to the lowest point possible. Here, the JoyKey® allows the water to continually drain out of the instrument. This ensures that the inner taper remains constant by completely eliminating water build up in the targeted tubing section. Most importantly, the WaterWick® maintains the integrity of the air column of the instrument.