tuning fork set is made of high-quality aluminum alloy material, with a clear tone, longer sound, and perfect frequency-non-magnetic, corrosion-resistant aluminum alloy structure, lightweight, and durable.Great for subtle energy work, tracing meridian lines, balancing energy centers, drawing Reiki symbols, clearing crystals, cleansing living spaces, aligning your 7 body chakras, DNA restoration healing, sound healing, and yoga training.7 chakras different tuning forks, 1 wood mallets.1 Root chakra 194.18HZ, 1 Sacra chakra 210.42Hz, 1 Solar Plexus chakra 126.22Hz, 1 Heart chakra 136.10HZ, 1 3RD Eye chakra 141.27Hz, 1 Crown chakra 172.06Hz, 221.23Hz note: Cloth bag color random and style, cannot choose the specified color and styleMaterial: Aluminum alloycolour: As Shown Package Contents:1 x gavel (color random and style, cannot choose the specified color and style)7 x tuning forks(194.18HZ 210.42Hz 126.22Hz 136.10HZ 141.27Hz 172.06Hz 221.23Hz ) Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.