Minoura Action Bridge

Rollers is not an easy type of trainer for the beginners. You must maintain balance on the freely spinning roller drums. Actually, it's difficult, however, rollers can offer you a wonderful and enjoyable training experience rather than stationary trainers.
Action Bridge is a helper device for the beginners to support the bike with clamping the front fork. It doesn't mean you can ride rollers alone by using Action Bridge. It requires another practice.