Stageline Stands KB40 Adjustable Padded Portable Keyboard Bench Black B Stock

There is a small metal piece loose inside the leg and it rattles when moved back in forth.  There is nothing wrong with the bench structurally. The piece is most likely from the hole punch for the pivot bolt.   

X-type padded keyboard bench with three adjustable height levels.

Easy to set up.

Height 16” - 19.75”.

Seat 12.5” x 17”.