Kala KA-U-Bass-RUMBL-FS Mahogany Rumbler U-Bass Bundle with Gig Bag, Instrument Cable, Wall Hanger, Tuner, and Austin Bazaar Polishing Cloth Laminate Mahogany back and sides Rosewood fretboard and bridge 21 inch scale Kala Silver Rumbler Strings Kala electronic system with an active EQ and built in tuner