The 2-pack A-Zoom .410 GA Rem Snap Caps are precision CNC machined from solid aluminum to exact cartridge dimensions. A-Zoom Snap Caps with their famous Dead Cap have been proven to withstand over three-thousand dry fires. These great A-Zoom Snap Caps are perfect for teaching safe gun handling, functionality testing, and safely decocking without causing any damage to the firing pin. The .410 GA Rem A-Zoom Snap Caps with their Hard coat anodized aluminum construction are extremely tough, reliable, and durable. Snap Caps allow you to check the firearms cycling as well as practice sight control and trigger squeeze.