The Benchmade 5500SBK Mini Drop Point Presidio Automatic AXIS Lock Knife Black Serrated Edge. The Mini-Presidio 5500SBK features a black anodized aluminum handle that is ergonomically shaped with machined multi-directional ribs. The Auto 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 5500SBK knife has a BK1 black 154CM stainless steel blade with a partially serrated edge and dual thumb studs.