Shoulder Arm

Small Robot Shoulder Arm Unit
http://youtu.be/-DFTO55YBYY
https://youtu.be/HLWZ1dC2c6o
using these parts for body
http://www.thingiverse.com/thing:392586
http://www.thingiverse.com/thing:405244
http://www.thingiverse.com/thing:392609
http://www.thingiverse.com/thing:392578