The On-Stage Stands Telescoping Boom Arm adjusts from 19"-30". The boom arm is equipped with standard 5/8"-27 threads, a steel counterweight, and covered with neoprene stamped rubber, which allows for maximum grip. The arm boasts all-steel construction and a locking washer that will secure any boom in place. Independent adjustments for length and anglewith a maximum rotation angle of 320°allow for full extensions and maximum flexibility when miking your vocals.All-steel construction, stamped rubber pads, and locking washer allow for maximum grip Independent length adjustment extends boom from 19"-30" Standard solid 5/8"-27 end