A gear hob is a cylindrical, helical cutting tool featuring multi-point teeth used in the gear hobbing process to progressively generate gear profiles. Resembling a heavy-duty screw with gashes (or flutes) along its length to provide cutting edges and clear out chips, the hob rotates in perfect synchronization with a rotating gear blank workpiece. This continuous, multi-point cutting action generates the entire set of teeth simultaneously rather than cutting them one by one, making it one of the fastest, most precise, and cost-effective methods for large-scale industrial gear production.