Audio2000'S AST4322B Microphone Stand with Boom Black Floor Tripod Microphone Stand with Boom Height: 37.4"- 63.4", Boom Length: 33.1", Tube Ext. Diameter: 0.88" Boom House and Leg-Housing: Die-Cast Iron More than One Boom Arm allowed to be installed on the AST4322B ^Height: 37.4"- 67.4" ^Boom Length: 31.1" ^Thread 5/8" X 27 ^Leg House: Die-Cast Iron