WindTech SG-150 Shotgun Series Windscreen, Inside Diameter .7500" / 19mm - BlackWindTech windscreens use a proprietary non heat manufacturing process, and are constructed from a specially developed hypo allergenic, open cell, acoustical foam called SonicFoam. The use of SonicFoam permits the free passage of sound energy without affecting the microphone's frequency response. While remaining acoustically transparent, Windtech windscreens are engineered to reduce wind velocity which virtually eliminates wind noise, breath sounds and