Ultimate Support AX-48 Pro Plus Two-tier Portable Column Keyboard Stand (Black), Boom Attachment, Ulti-Boom Pro-TB, and Tote The modern look and shape of the APEX AX-48 Pro brings the keyboard player out from behind a stack of no-character keyboard stands, and into the spotlight with the rest of the band. two sizes of Tribar arms (one set of 13" arms, and one set of 18" arms) to safely hold today's keyboards, synthesizers, and keyboard workstations of all sizes. Part Number: 17368AX-48 Pro Color: BlackAX-48 Pro Height: 46" (1168 mm)AX-48 Pro Weight: 19 lbs. (8.6 kg) AX-48 Pro Folded Length: 52" (1321 mm)AX-48 Pro Load Capacity: Up to 125 lbs. per tier (56.8 kg) or 250 lbs. total (113.6 kg)Ulti-Boom Length: 18.9" - 34.6" (480 mm - 880 mm)Ulti-Boom Weight (w/Adapter): 2.5 lbs. (1.1 kg)