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 jxs 03/14/14 ir/jxs