Tama MS456RBK Round Base Telescoping Boom StandThe Iron Works Tour Series MS456RBK telescoping microphone boom stand, with heavyweight round cast base, offers innovative features that surpass the status quo in terms of value, performance and functionality. No matter what the position or venue, the MS456RBK will make your setup easier, faster and more reliable than ever. Specifications Cast Grip Boom Tilter Die Cast Locking Thumb Nut Sure Cast Adjustment Collar Iron Core Telescoping Boom Arm