The Pachmayr A-Zoom 7mm-08 Remington Snap Caps provide safe reliable training and function testing with solid aluminum construction that eliminates unnecessary risk during firearms practice.A-Zoom 7mm-08 Remington Snap Caps - 2 PackTough solid aluminum construction for durabilitySafe for dry fire training and function testingIdeal for firearms storage and training purposesEliminates risk of firing pin damagePerfect for firearm training storage and function testing while protecting your rifle's firing mechanism from damage during dry fire practice.