I have SR3Dpro and 3Dio and was able to attach them without any problems, so please use this as a reference. Inventory: 3 sets Bulk purchase options: 2 sets: 2800 yen 3 sets: 4200 yen Bulk purchases are possible in increments of 10 pieces. Please comment with how many sets you would like. Repeat customers will receive 2 extra pieces for every 10 pieces purchased. When shipping, I will put them in a bag and ship them in a cardboard box to prevent bending. ──────────────────── Excerpt from the sales site: The small black paper in the microphone capsule of the Headrec Binal 2 is called a pop filter or wind screen. The filter may wear out after using the microphone for a while. The material of this filter is slightly different from the original filter that comes with the Primo capsule. However, it does not affect the sound quality or durability. This pop filter also works with 3Dio FS and FS XLR. ──────────────────── 3Dio HeadrecAudio ASMR Binaural microphone Ear Eardrum Filter