The OSS sub-hilt fighter offers all the advantages and performance of a custom knife at a fraction of the price. For the ultimate grip, the handle guard, and sub-hilt are injection molded in one in one integral piece of Kray-Ex. This manufacturing method makes the OSS more affordable while delivering the durability, security, and control in the hand that the sub-hilt fighter is famous for. The OSI is the single edged version of our OSS. Hollow ground to a thin, ultra-keen edge it's an awesome sticker and will cut and slash with the best of them.