This is a set of ankle joints and feet for Classics Optimus/Magnus. They make the toy slightly taller, but more importantly they add the ankle tilt that collectors go crazy for these days. While they should be simple to install and assemble, a short length of 2mm metal rod in each assembly through the holes provided will make the joint stiffer and slightly more secure. Designed for WSF Polished. This version is modified from a version I have test-printed and should allow "City Commander" parts to be attached still, but is UNTESTED.