BLACKHAWK! Model BHB30 Assisted Opening Plain-Edge Knife Assisted-opening 440C stainless steel blade is opened to approximately 30 degrees, a powerful spring in the handle snaps the blade to the fully opened position 420J stainless steel liner-lock locking mechanism secures the blade in place Blade length of 3.250 and an overall length of 8.125 This item is not for sale in some specific zip codes