Thousands of cases of a frozen pizza snack sold in 21 states are being recalled because they may contain metal pieces.

Rich Products Corp. voluntarily issued the recall of 6,408 cases or more than 160,000 pounds of its Farm Rich Pizza Cheese Crunchers, according to the U.S. Food and Drug Administration.

The pizza was sold in Alabama, Arkansas, California, Florida, Georgia, Indiana, Iowa, Kansas, Kentucky, Maryland, Michigan, Missouri, New Jersey, New York, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Texas and Wisconsin.

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The recall was initiated by the New York-based company on May 19.

The product has a best-by date of July 7, 2027, with a UPC code of  041322652256 and a lot number of 003029976.

MORE THAN 17K COFFEE MAKERS RECALLED AFTER DOZENS OF REPORTED BURN INJURIES. 

The FDA classified the recall as a Class II health risk, which means the defect could cause temporary or medically reversible health problems.

The agency didn’t specify if any injuries had been reported or how the possible contamination was discovered. 

The recall comes weeks after another frozen pizza recall over salmonella concerns.

The pizzas, which spanned several brands, had been sold at Walmart and Aldi.