Bighorn Sheep 3D Archery Target Replacement Rear for use with the Pro Series Bighorn Sheep 3D Archery Target (Part #21550), made from DuraFlex Foam. One of the benefits of these high-quality targets is replacement parts! They allow you to replace the sections of the target you need, instead of the entire target. When your target needs a new rear section, the Bighorn Sheep 3D Archery Target Replacement Rear is available to maintain structural integrity. Made from DuraFlex Foam, the replacement rear provides long-lasting durability and arrow stopping functionality.