MX-21 (Epoxy 1" Diameter Monadnock straight batons use a pin and spring to create a mechanical (or positive locking) mechanism that keeps thebaton open and makes it easy to close. They have increased knock-down effectiveness due to our innovative weight forward shaft technology. MX batons feature a small grip diameter for better concealment and comfort.Weight forward technology for increased knock-down powerLifetime repair or replacement guaranteeMade in the USA