The AutoLock was developed through cutting-edge engineering that combined the advantages of friction lock and positive lock technology. The technologically advanced, patented AutoLock baton is ready at hand when you need it and out of the way when you don't. It's easy to expand, and when it's time to close, simply push the button in the end cap. No need to look for a hard surface to collapse the baton. Includes Standard Cap. For Dome Cap Adapter add SKU MON-DCA and for Wedge Cap Adapter add SKU MON-WCA.