Aosdin A100C Hawaiian Koa,Slotted Head,Green Shell Inlay,Concert Deluxe Ukulele Bundle with Gig Bag,Professional 23" for Professional Performance 100% new high quality Will delivery as soon as possible by amazon Body(TOP,BACK,SIDE) is made of Hawaiian KOA. Exquisite workmanship, smooth and bright surface, can present original wood color and grain perfectly. Back board uses patent pressure convex design, which can make the case get a more beautiful shape, bigger volume, better resonance and more beautiful sound. Original Tuning Pegs can make sure strings and tones stable. The Neck is well desgined,and will let your left hand feel more comfortable and smooth . Original Aquila strings, guarantee of quality. String length is 381MM. Ox bone nut & saddle,rosewood bridge.Mahogany neck-hard material, exquisite workmanship,smooth. Rosewood fingerboard-hard material,corrosion resistance,comfortable touch. Crown Width 1.6mm copper fretwire-exquisite material,resistance to abrasion and embroider,good sound