The Rode FlexClip GO is a set of 3 clips that you use to attach your Rode Wireless GO and GO II to different materials. That means you can use your wireless transmitters in multiple situations. With the MagClip GO, you can click the transmitter onto a magnetic surface or clamp it on the clothes of your interviewee. That way, you don't damage their clothes and you can easily hide the transmitter on the inside of a jacket. The CrossClip lets you attach the transmitter vertically. For example, on a tie or a dress shirt. Thanks to the vertical attachment, you can aim the microphone in the right direction and ensure you pick up the sound clearly. Do you prefer to pin the transmitter? Use the VampireClip. This clip has 2 pins, so you know for sure the clip is securely attached.