This is the PROTOform Crosshair Magnetic RC Body Mounting Kit.                                                                                          FEATURES: High powered magnets pinpoint the exact position of an RC vehicles's body posts Ensures perfect alignment for drilling body post holes in polycarbonate bodies                                                               Post caps install on each body post and marking magnets are then placed on the outside of the body allowing the body post position to be precisely marked                                                                                                                              INCLUDES: Four Body Post Caps                                                                  Four Marking Magnets