Monoprice Double X-Frame Keyboard Stand Classic steel stand with easy height adjustment. Compatible with optional second tier stands. Tier tube size: 1 in (25mm). Max Height: Up to 38in (970mm). Load Capacity: 110lbs (50kgs) stand is held in place using a heavy-duty "tooth" grip A quick-release handle lets you easily lock the teeth in position or unlock them for packing up after the show