SOG Knives SOG12730457: A sublime and powerful daily carry, One-Zero XR occupies a leadership role in SOGs selection of folding knives. With its super strong XR Lock providing smooth and reliable blade lock-up, its much more than a handsome face. It features two-tone contrasting polished Cryo CPM S35VN steel, fluid, yet confident lines, with sculpted aircraft-grade aluminum handle. Made for those who demand quality and precision, its a knife precisely designed to exceed expectations. aluminum handle. Blending premium materials with precise design, One-Zero XR is a sleek, sophisticated folding knife delivering confidence in a detailed and powerful package.