This 3-piece HSS end mill set includes the most commonly used sizes: 1/8", 3/16" and 1/4" – all featuring a uniform 3/8" shank for easier tool changes and compatibility with standard collets. Made from durable high-speed steel, each end mill has a 2-flute square end design ideal for general-purpose milling in metal, wood, and plastics. The set comes packaged in a compact plastic pouch case for organized storage and easy transport, making it a perfect choice for machinists, fabricators, and hobbyists alike.