Neumann WS87 Windscreen (for U87 Series and TLM50/103/170R or M147) Compatibility: Neumann U 67, U 87Ai, TLM 50, TLM 103, M 147Tube and the TLM 170R Microphones Suppression of wind noise: 26dB Attenuation at 15 kHz: 3dB Diameter: 90mm / 3.54"