3 SENTRY ALARM MINES .22 Cal trip wire alarms Gamekeeper Multicam Prepper Pack Nuisance Animal Control Henry Krank Style Mini-Sentry Property Security Survival Safe to use .22 Cal Blanks available at any Home Depot or Amazon.com 100% Steel Construction made in the U.S.A. Featured product on Guns America website As seen on History Channel's "American Restoration"