The ball type has a nut grip socket (0.3 inch (8 mm) of the opposite side. It uses a universal joint that is called "links" in the middle part from conventional universal joints, which are connected by 2 axis to create a smooth and compact ball joint type that rotates well. The range of use is greatly improved in narrow places where the pivot is required to escape. The ball joint mechanism also developed a new ball joint mechanism that does not use a pin that is prone to breakage. Excellent rotating feel and durability. The oscillating angle can be moved 25° up and down, left and right. Allows you to carry bolt/nut without dropping in tight spots and situations where a universal socket is required and requires a rotary axis to escape.