The Vevor annular cutter set is a 6-piece mag drill bits kit designed for clean, efficient metal drilling. Made from M2AL high-speed steel, these cutters offer strong wear resistance and dependable high-temperature performance. The set includes common drilling sizes from 1/4" to 9/16" with a standard 3/4" Weldon shank for compatibility with most magnetic drills. An included plastic storage case helps keep the cutters organized and protected. Suitable for use on steel, stainless steel, aluminum, cast iron, and copper.