This is a leg for a Qrotor structure. Height 113mm Width 24mm. This leg was designed to be attached in the four square aluminum arms. (16x16 mm) of the Qrotor. You can also find the "Main_Plate" of the Qrotor structure here: http://www.thingiverse.com/thing:17452 More info: http://madebyfrutos.wordpress.com/ David Sanz & Miguel Ãngel de Frutos Robotics and Cybernetics Research Group_CAR/UPM