Covalent Lava Flumi Set - Pack of 2 FlumiesThe Covalent Lava Flumi Set Pack of 2 Flumies includes one double ended Covalent Copilot and one Ollihess 60mm Lava mallet. We know it can be hard to find the best friction mallets for your gongs, so we've put together some of our favorites for sound therapists, spiritual healers, percussionists, and general gongists who want to make whale sounds with their gongs. Ollihess Rubber Lava Friction Gong Mallets are designed specially to avoid leaving