Users Manual
Pin
It can be used for connections 
between part and part, part 
and Hub in most cases. It can 
also be used as a small axle 
providing free rotation.
It can be used on part or link 
that rotates in nearly 360°.
It can be used for connections 
between part and part, part and 
axle slots on the Hub. It trans-
fers the rotation of the motor to 
wheels, links or other parts. 
It can be used for connections 
among multiple parts. Links can 
be set next to each other with 
free rotation. 
Double pins at both ends
With a ball head at one end
Ball Pin
Double cross-shape ends
Axle
One longer end pin
Long Pin 
Note
The plier is used to unplug the connectors for safety 
issue, and to avoid damages to parts. 










