When you activate an Ohm Crystal Bowl under a treatment table, it adds a whole new sound healing dimension. You strike the bowl with a yarn mallet occasionally during the treatment. If your table is wood, the wood’s cells act as resonant chambers that harmonize with the tuning forks and music and enhances the treatment. Our crystal singing bowls are tuned to Ohm, making them a premium addition to the sound healing line. There are several sizes available.