Longer belts require fewer stanchions saving on purchase cost and set up time. The QueueMaster Twin 550’s lower belt restricts pedestrians from ducking under the belt, helps keep children in line and provides guidance for the visually impaired using a cane. All QueueMaster stanchion models feature a braking system for slow, safe belt retraction and a locking belt end to prevent accidental release. QueueMaster Twin 550, Satin Stainless Steel, 13' Yellow Belts The 13’ belt in this model is the longest in any economy stanchion and is 75% longer than the industry standard 7.