Marimba One Jewel Marimbaphone, A=432, 2 octaves, diatonic, Just Tuning/pure tuning: the musical distance between the notes is based on the natural series. The result is an unusually warm and harmonically rich sound, playable from both sides, made from thick-walled, lightweight aluminum for stability and durability. Resonators powder-coated in midnight blue, frame painted in black. Lockable 8-inch rubber wheels for easy rolling. Assembly and dismantling takes less than 10 minutes and makes transport easier. Designed to be played both indoors and outdoors. All Jewel Marimba bars are made from ethically sourced Honduras rosewood and are tuned by Marimba One's Master Tuners, guaranteeing you a premium sound, including mallets