Specialized parts and accessories category for improving machine tool performance, maintaining precision, and expanding functionality. Includes replacement parts, optional equipment, jigs and fixtures, protective covers, cooling system components, and other accessories used in machine tools such as lathes, milling machines, grinding machines, and machining centers. Product group that complements and enhances the basic functions of machine bodies to improve machining accuracy and optimize work efficiency. Excludes consumables and cutting tools, focusing on parts integrated into machine structures and accessories for functional enhancement.