|Design ID: 85489b
||Years in production: 2009|| Available Colours:
||[List of appearances]|
Part 85489b is the large, flanged train wheel with a TECHNIC cross pin hole in the center and a TECHNIC circle pin hole off center. This is the first time LEGO has produced this part, but similar parts have been available for a while, thanks to moulding professionals not affiliated with LEGO.