The On-Stage KSA8500 boasts two sets of fully and independently adjustable arms for the ultimate in  2nd- and 3rd-tier customization. Compatible with any 1" square or 30 mm round-tubed stand, as well as On-Stage Z stands, each of the KSA8500's support arms feature an independent 10-degree increment posi-lok adjustment for height, angle, depth and width, providing 43.5" of total width distributed over a 2nd- or 2nd- and 3rd-tier configuration. The telescoping stabilizer bar accommodates keyboard stands up to 32" in width, while non-slip rubber end caps protect an almost limitless array of keys, laptops, mixers and more.