Buck Inertia Linerlock A-O knives BU293BKS on sale now for $52.39. UPC code 033753128370. Made in USA. 4 1/2" closed. 3 1/8" stonewash finish assisted opening 420HC stainless blade with thumb slot. Utilizes advanced ASAP technology for rapid one hand deployment. Stonewash finish 6061-T6 aluminum handles with grip ridges. Stainless pocket clip.