On-Stage KSA7500 Second Tier for Keyboard Stands Add second keyboard to any keyboard stand with round or square tubing Can be stacked on top of a 2-tier stand making it a 3-tier stand Includes two "cork-style" end caps 36 Radial slots adjusts the angle of the 2nd tier and secure any position in place Telescoping stabilizer bar adjusts along w/ the width of your keyboard stand Universal mounting attachment fits into any 1" or 30mm round or square tubing