The Easton 4mm Match Grade Half Steel Half Outs are precision-engineered components designed to maximize the accuracy, consistency, and durability of 5mm arrows. Featuring a patent-pending two-piece design, each insert combines a sleeved aluminum collar with a molded alignment ring fused to a post for perfect shaft fitment and improved impact resistance. The 75-grain build includes hard-anodized aluminum with dark nickel-plated steel, delivering excellent strength-to-weight performance and front-end protection. Ideal for archers demanding enhanced toughness without sacrificing precision, these inserts fit a wide range of Easton and other 5mm arrow models.