Altra 204 Insert and Outsert 300 Spine - Durable Aluminum Arrow ComponentsEnhance your archery performance with the Altra 204 Insert and Outsert 300 Spine. Designed specifically for Altra Arrows 204 Shafts, these components are crafted from high quality 7075 T6 aluminum, ensuring unmatched durability and resilience in the field. With a secure insert depth of 0. 875 inches and an outsert that encapsulates the arrow end at 0. 43 inches, you can trust that your arrows will maintain their integrity during high stress