The Annular Hole Cutter HSS 58 x 55mm Weld Shank 19.05mm is a specialized cutting tool used for creating precise holes in hard materials such as metal, especially in applications requiring a clean, smooth cut. HSS stands for High-Speed Steel, a material known for its durability and ability to maintain hardness at high temperatures, making it ideal for cutting through tough materials like steel, stainless steel, and other hard metals. 58 x 55mm refers to the dimensions of the hole cutter: 58mm is the diameter of the hole that the cutter will create. 55mm is the cutting depth or the depth the cutter can penetrate into the material. Weld Shank: The cutter has a welded shank, which allows for secure attachment to a compatible drill or machine. The weld ensures the cutter is firmly in place during use, preventing slippage and enhancing performance. 19.05mm refers to the shank diameter, which is the size of the portion that fits into the drill chuck. The 19.05mm (3/4 inch) shank size ensures compatibility with various drilling machines. This annular hole cutter is ideal for precision hole cutting in metalworking, machining, and fabrication tasks where exact hole sizes are needed. The HSS material ensures long-lasting sharpness and cutting ability, while the weld shank makes it compatible with high-power drills and machines for industrial use.