The Benchmade 580S Barrage Spring Assist Knife Axis Lock Serrated is a strong knife with quick spring assisted action. Use the ambidextrous thumb studs to prompt the AXIS-Assist mechanism. For those who like the peace of mind that a safety offers, you'll be glad to know there's one on the handle back. Includes a reversible pocket clip for easy carry. The 580 has a drop point blade that is satin finished 154CM with a part serrated edge.