This is one Makelangelo Robot Pen Holder, same as would be delivered in a complete Makelangelo robot kit. It includes the 9g servo and the servo horns.
– The Makelangelo Plotter assembly instructions – Ships in a box 6x4x3″ weighing 200g – Does not include the hooks or belts seen in the photograph. – Shipping is included! – Want to print your own? Get the STL files here 1 and 2