Keep reloads at your fingertips with the TacStar Slimline SideSaddle Shell Holder. The slimline design of the nonglare anodized aluminum backing plate takes up less space on the receiver with fewer areas to potentially snag. The shell carrier is made of flexible synthetic rubber for durability and weather resistance as well as secure shell retention. 12-gauge only. Nonglare anodized aluminum backing plate Flexible synthetic rubber shell carrier Weather-resistant Slim, streamlined profile