With this insert, you no longer have to turn your Garmin or Wahoo computer 90 degrees to attach it to the computer holder's bayonet catch. Simply plug it in and turn the small screw cap to the right. This means that even the larger computers fit between very narrow extensions that you would otherwise not be able to mount due to lack of space. The basis is always the modular computer holder 2.0 from the smart English people, which you can find here . Simply unscrew the old insert and screw in the rotating insert. It's a matter of two minutes and two little screws. This is best explained with a video .
Another clever attachment is the light, GoPro or Aero Pod adapter, which is screwed onto the holder from below and which you can find here .
To avoid misunderstandings: This is only about the rotatable insert, not the entire computer holder.