These scalar energy tower busters are 3" wide at the base and 7/8" in height. They have aluminum shavings, a copper wire with quartz crystal in the center, tumbled amethyst, shungite and blue kyanite, cast in polyester resin. Tower busters are typically reserved for outdoor use, but also work great in the home. People place them near cell phone towers to help neutralize harmful frequencies, and there is also evidence that they can increase environmental health and repel pollution when used in gardens and waterways. See blog for more info on this.