The Rob Roberts TSS Raptor Invector 12 Gauge Choke is engineered for excellence in wingshooting. Crafted from 17-4 PH stainless steel this choke tube is designed to enhance performance with premium tungsten shot. It is a standout component of the RRaptor Series benefiting from years of dedicated product development and advanced technology. The Raptor TSS is built for durability and precision ensuring a superior shooting experience. Note that it is designed for use in only one barrel of your shotgun.