Benchmade 570SBK Presidio II AXIS Lock Folding Knife Black Serrated Edge. This new manual Presidio II model is black aluminum handle and a serrated edge black finished blade made from CPM-S30V steel. This black anodized 6061-T4 billet aluminum handle with Benchmade's AXIS lock system for effortless one-handed opening and closing. Milled grooves in the handle improve grip. The Presidio II has a slightly larger blade and handle that is built to perform well as a tactical or everyday carry knife.