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. The bottom belt makes this stanchion ADA (Americans with Disabilities Act) compliant. This post features a unique two-piece construction which allows the lower belt mechanism to be easily replaced in the field. QueueMaster is a range of high quality, low cost retractable barrier stanchions for forming customer queues or restricting access. Used in retail stores, airports, stadiums, cinemas, or wherever crowds need guidance and control. All QueueMaster stanchion models feature a braking system for slow, safe belt retraction and a locking belt end to prevent accidental release. A full circumference floor protector to prevent floor damage is standard. The 13? belt in this model is the longest in any economy stanchion and is 75% longer than the industry standard 7.5ft. Longer belts require fewer stanchions saving on purchase cost and set up time.