An ordinary ball type universal join has a structure with a pin type joint. Ko-kens universal joints are connected with mutually engaged hexahedrons. This connection disperses the load across whole outer circumference. The same durability is obtained with this design in comparison to the pin-type.

The joints use ball mechanisms to provide a fluid motion/rotation. They are connected by mutually engaged hexahedrons, this innovative connection disperses the load across the whole outer circumference of the tool. 

Allows 60 degrees of rotation