Benchmade serum dual action black on black 154-cm blade steel. Bought new and 1-5 times when deploying sticks about 1/4 of the way.When pushed back in works normally again.Don't have time to send it back to benchmade. Manually works perfect and is new. Looking for a nice flipper, no fixed blades or scerratted please. Thank you and know your laws.interest are zt 0900, 0460 and so on. Don't care for large blades or heavy as well as I will not carry them and they will just sit in drawer.