>Keys are 1-1/4" wide, except the top note which is 2-1/4". Alto Keys are 18" long. Soprano keys are 11-1/2" long. Bass Keys are 1-3/4" wide. Standard bass bars are usually 36-37" and 42-43". Custom lengths available. The lowest note on the bass marimba is A.
Tenor
> Tenor bars range in length from 24-1/2" to 8-3/4", decreasing in length every half-step. All keys are 1-1/2" wide. The lowest note on our standard marimbas is F3, although F# is available as a custom order.
Concert Grand
>All keys are 1-1/4" wide. Concert Grand bars are approximately 1-1/2" longer than Tenor bars of corresponding pitch.