Peter Hess phKSET-35a, Joint/univarsal bowl + large heart bowl + small pelvis bowl, Compared to the Singing Bowl Set 30, the Heart Bowl in this professional set for the Sound Massage is more intensive in sound and vibrations., Mallet recommendation:, felt mallet phFS-2h / phFS-2w / phFS-3h / phFS-3w, phGS-5a / phGS-5KKS