The product is a 1" 4-flute X 1" Shank HSS End Mill with a single end design. It has an overall length of 4-1/2" and is made of high-speed steel (HSS). This end mill is a cutting tool used in metalworking, specifically designed for CNC machining and other manufacturing processes. With four flutes, it provides efficient and precise cutting performance for a variety of materials. Its 1" shank diameter ensures secure fitting in the chuck or collet for stable and accurate machining. This product is a reliable tool for professionals in the metalworking industry.