In a continuing effort to improve our products, we have completely redesigned our Air Hold Down System. With our new system, the air bag is not attached at the ends, so it is no longer necessary to remove the end caps. The side housing of the system can be quickly removed. Air Bag changes that usually took 20 to 40 minutes, are now reduced to 3 to 5 minutes. The air bag can be replaced with out the need to remove any other components, the nomar strips and the end caps stay in place. Saving you money by eliminating down time......because it is Quick Change! We also carry retro-fit kits for your "old" Ziegelmeyer Quick Change Air Bags!