USDA Prime Beef is the highest grade in the U.S. Only 2-3% of all graded beef achieve this top status. Premium tenderness, top-tier marbling, and rich flavor is what this roast is made of. Not all prime rib is equal. It is one of the greatest misconceptions in the beef world. Most prime rib is not graded "prime". The word in the cut is describing the primal cut of beef (Ribs 6-12) rather than an official USDA Quality Grade. This is officially graded in the top 2-3% in the nation and is Graded USDA Prime. Take your next "prime rib roast" to the next level this holiday season with our best selling, highest graded cut of beef... The Prime - Prime Rib Roast!