Lanikai LU-21 C Concert Ukulele (USED) in Excellent condition with gigbag, The Lanikai LU series Concert ukulele delivers many feature advantages not found on other ukuleles at this price level. The LU series Concert ukulele is equipped with a wider nut for player comfort, smooth action open back tuners with black buttons, NuBone XB nut and saddle, hidden scarf joint for added sustain, Aquila strings, satin finish.