The Rob Roberts Raptor TSS Optima HP 20 Gauge Choke is expertly crafted from durable 17-4 PH stainless steel ensuring longevity and resilience. Specifically designed to enhance wing shooting this choke delivers superior performance with premium tungsten shot. As a standout in the RRaptor Series it showcases years of dedicated product development and cutting-edge technology. Please note that this choke is designed for single-barrel use offering unmatched precision and reliability for any shooting enthusiast.