Stop, please!
Roller Conveyor 6 40×40 E D30 D11 Brake is used to slow down crates and transported goods at specific points.
The 19 mm-wide steel bracket simply clips over Rollers D11 and Roller Conveyor 6 40×40 and is just as easy to remove.

Roller Conveyor 6 40x40 E D30 D11 Brake - 0.0.677.70