SHRUTI BOX SURPETI PEDAL DE PIE GRANDE 432Hz 13 NOTAS INSTRUMENTO MUSICAL MADERA DE TECA | eBay
Shruti box pedals | JackenElswythBanjos
Bowring Foot Pedal — Brooklyn Healing Arts
Shruti Box Company - The Bowring foot pedal mk3. Collapsible for portability. At last, a beautiful acoustic drone accompaniment is made possible with good control of dynamics. | Facebook
Handsfree Shruti Box drones for a huge acoustic sound! - YouTube