The 3D arm is the only arm on the market that allows movement in 3 dimensions: up, down and sideways, making it easier to keep the bike in place.--693 / MLP MEDIUM 3D ARM (for the second bike art.708 and art.709)
Attachment arm for 3rd bike
Jaws system with rubber protections
https://youtu.be/GU3qS7lvE64