Commercial Alignment aka Ganging Clips are perfect solution for getting your folding chairs organized and aligned for your events, seminars, classrooms, and parties. They are made of heavy duty plastic and are available in black. The industry standard size allows for using with the most brand poly folding chairs available in the market. Attach only two clips at the bottom and at the top to hold two chairs together. These commercial grade clips are widely used in organizing chairs at a party, events, festivals and they are also a great item to add to your rental business inventory.