The MP-J-3X3 joint or coupling connects rigid rods whose axes are inclined to each other. It is commonly used for shafts that transmit rotary motion, and widely used for connecting model cars, model ships, robots, etc.
The Mecanum wheel is an omnidirectional wheel design for a land-based vehicle to move in any direction, such as go straight, obliquely, horizontally, S-line, and rotate at any angle with zero radius.
