The Benchmade 525SBK Mini Presidio AXIS Lock Knife Black Serrated Edge. The Mini-Presidio 525SBK features a black anodized aluminum handle that is ergonomically shaped with machined multi-directional ribs. The AXIS lock mechanism is ambidextrous and makes quick work of opening and closing the knife. The steel pocket clip is reversible for right or left handers. The 525SBK knife has a BK1 black 154CM stainless steel blade with a serrated edge and dual thumb studs.