Features: Adopt high-quality environmental for protection material,durable foam, nice breathable material. Effectively reduce explosions, wind disturbances, saliva sprays, and clear, loud sound during recording or playback. Professional foam microphone cover design, Wide used for conference room, podium microphones, news interviews, etc. High elastic sponge tightly combined. It can prevent air interference on the microphone to get the clear and nice sound. Specifications: Material:Sponge Color:Black Option Type:Type A,Type B,Type C,Type D,Type E,Type F,Type G, Type A Inner Diameter:Approx.20mm/0.79in Type A Outer Diameter:Approx.37-40mm/1.46-1.57in Type A Length:Approx.248mm/9.76in Type B Inner Diameter:Approx.20mm/0.79in Type B Outer Diameter:Approx.46-55mm/1.81-2.17in Type B Length:Approx.208mm/8.19in Type C Inner Diameter:Approx.25mm/0.98in Type C Outer Diameter:Approx.41mm/1.61in Type C Length:Approx.159mm/6.3in Type D Inner Diameter:Approx.23mm/0.91in Type D Outer Diameter:Approx.43-52mm/1.69-2.05in Type D Length:Approx.160mm/6.3in Type E Inner Diameter:Approx.20mm/0.79in Type E Outer Diameter:Approx.40mm/1.57in Type E Length:Approx.146mm/5.75in Type F Inner Diameter:Approx.20mm/0.79in Type F Outer Diameter:Approx.41-52mm/1.61-2.05in Type F Length:Approx.144mm/5.67in Type G Inner Diameter:Approx.18mm/7.09in Type G Outer Diameter:Approx.42-47mm/1.65-1.85in Type G Length:Approx.121mm/4.76in Package Includes: 1 x Mic Sponge Cover note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.