The Teen Bead Stair Tray features two areas for holding the bead bars: one for 1 to 9 (or 10), and another for up to ten bars of 10 (bead bars sold separately), as well as a groove along the front edge for holding bead bars while working. The tray is made of thick, warp-resistant basswood ply with a natural, satin-touch finish. The tray measures 28 cm x 14 cm (about 11" x 5.5"). A handy accessory for at home or school.