This is a pair of heel struts for your figure. No modification to the original figure is required as they just plug into the bottoms of the feet. These help the figure stay standing in more extreme poses. Some tightening or loosening of the attachment point may be needed due to Shapeways variance in tolerance. This can be done with acrylic hobby paint or super glue. Please follow Shapeway's guide to painting White Strong Flexible for even more customizing options.