The Black Eagle .203 SS Outsert Instinct 600 Spine = 5.87 296 is engineered for maximum penetration and shot-after-shot performance. This stainless steel outsert is designed to fit shafts with a .203-inch internal diameter and a spine rating of 600. It has been rigorously tested to ensure deep penetration and consistent performance, making it ideal for both hunting and target archery. The outsert is easy to install, with a dry fitting recommended for perfect alignment. Its robust construction and precise design make it a reliable component for serious archers