*The structure of the square shaft multi-spindle tool is the same as the structure of the round shaft multi-spindle tool. This multi-spindle
tool is suitable for the straight line or the rectangular working hole. When using, don't move too much to reduce the lifetime of the
cardan joint. The usage is also the same as the round shaft one.
(We will design the structure of gear case, that is, the position of the boring hole as much as possible according to the coordinate of