Parking Brake for Trolley 29 November 2020, 19:35 Sorry, your browser doesn't support embedded videos, but don't worry, you can download it and watch it with your favorite video player! Raise the trolley and move forward the pink stand for unbraking. Raise the trolley and move backward the pink stand for braking. « previous mechanism Expandable Insert for Belling Plastic Tubes next mechanism » Chain Drive load comments Please enable JavaScript to view the comments.