Check the listing for details. Brass Shell Catcher Cartridge Nylon Mesh Collector Casing Durable Adjustable. Color: Black, Condition: New. Listed at 16.59 USD. Brass Shell Catcher Cartridge Nylon Mesh Collector Casing Durable Grip and Adjustable Mesh Accessories For Magazine Bullets Feature:1.Brass catcher come with two iron frame. The two iron frames would keep more space for the brass ejected, even if the brass mesh during with a large weight.2.The tactical net brass catcher with a narrow iron frame, which is more firmly fixed on the rail and will not slide easily due to recoil.3.The zipper in the bottom of the light mesh bag is designed for quick shell empty. The upgraded heat-resistant mesh prevent hot brass from4.Velcro strap design, easy to install with high density soft nylon hook and loop band there is no interference with optics no matter how you mount them.