Micro boring heads and universal boring heads are tools used in metalworking to perform precise and efficient machining operations. A micro boring head is a special type of boring head used for machining smaller workpieces. They are usually very precise and can be equipped with different bore diameters to machine workpieces of different sizes. A universal boring head is a tool used for machining larger workpieces. They are typically larger than micro boring heads and can be equipped with a greater number of bore diameters to machine a wider range of workpieces. Universal boring heads can also be equipped with different inserts to perform different machining tasks, such as internal and external turning or threading. Both types of boring heads are useful tools for performing precise drilling and machining operations in metalworking. The choice of the right boring head depends on the specific requirements and the workpieces to be machined.