Need high-capacity seating that is mobile? The Jiffy Mover System is the solution! These wheels attach to a large bleacher and don't need to reattach every time, so moving the seating is now a one-person job. No need to wrestle with aligning things just right or risk personal injury lifting heavy equipment. Just push and go! This Jiffy System is made for 8-row bleachers up to 21 feet long and can reach top speeds of 5 MPH. Having high-capacity mobile seating is great for public concerts in the park, city events or festivals, and seasonal fairgrounds.