The Infitec Archery Challenger Plunger delivers reliable tuning performance at a price that makes sense for every archer. Built from durable aluminum with a Teflon inner sleeve, it provides smooth, consistent arrow release while protecting your riser and arrows from wear. Its 5/16"-24 threading fits most modern recurve risers, and the adjustable spring tension allows you to fine-tune arrow flight for precision and repeatability. Finished with a hard-wearing aluminum cap and available in multiple anodized colors, the Challenger Plunger is a simple, dependable upgrade for archers dialing in their setup.