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. Specifications for Monadnock AutoLock Expandable Batons: Manufacturer: Monadnock Color: Black Features of Monadnock AutoLock Expandable Batons The AutoLock's patented locking mechanism ensures the baton will stay locked open while striking, blocking or jabbing Open passively or in a high-profile manner Rotating shafts help maintain control of the batons during a struggle Package Contents: Monadnock AutoLock Expandable Batons