This video explains how to create opposite-hand versions of parts in SOLIDWORKS using the Insert Mirror Part feature. After selecting a face or plane to mirror about, users can choose which items from the source part to include. The mirrored part maintains a link to the original, so changes propagate automatically unless the link is broken. Editing the derived body allows adding or removing details from the original file. Breaking the link removes in-context relations permanently, preventing future updates. This method differs from mirror patterns as it creates a separate, derived part file.