After years of use and folding down on the footplate these can wear and eventually just fall out. 

Instead of replacing just the wheel we find it better to replace the whole piece, this eliminates any possibility that the roller lock joint has also worn, which would result in replacement wheel just dropping out.

This item also includes the spring 

This item is only suitable for the above Clutched Models

Please see other listings for Clutch less Version (carpet only models)