Ideal For Reload Ammunition The shell catcher protects the ejected brass from getting damaged and allows you to reuse those spent brass casings. Velcro Strap Design Hook and loop band made of high density soft nylon, easily attaches to rifle barrel to allow brass retention and removes quickly to address jams or cleaning issues. Stiff and Large The springy frame is stiffer and larger compared to other brands, the caught brass won't twist the frame which will not cause ejection failures & jams. Durable Heat resistant mesh will not melt during use and the internal wire frame maintains the bag's shape even when it is full of brass. Easy To Empty There's a zipper in the bottom of light mesh bag for emptying shells quickly into a brass bag or dump pouch you have there to collect your brass casings.