K&M 18811 Stacker For 18810 Keyboard StandThe ideal complement to keyboard stand Omega 18810 to use a second keyboard or laptop. Bigger master keyboards can be placed on the large lower support arms. The depth of the upper support arms can be adjusted to 4 positions, so the lower keyboard remains visible. The desired height of the stacker can be set easily and quickly using the spring loaded clamping knob. 10 different heights allow each user to be able to find a position that best suits his