Sennheiser MZEF 8210 Vertical Extension Bar (120cm)The MZEF 8210 Vertical Extension Bar (120cm) from Sennheiser is a special extension piece designed for use with select Sennheiser microphones and hardware. It allows you to vertically extend the position of your microphone to achieve perfect height placement. Use this piece to meet the unique needs of your audio setup. The bar features a 3 8" thread. Extend Use this vertical extension bar to achieve perfect height placement with your microphone.