Kuryakyn Large Silver Bullet Driving Lights, 5/16" mounting bolt.
Universal Halogen Silver Bullet driving light kit with 5/16" mounting bolt
Halogen Style driving lights, Assembled with high-shock heavy-duty single filament 20Watt quartz halogen bulbs. We recommend them for use as auxiliary driving lights to help riders see & be seen.
Wiring exits the lamp through a hole behind the 5/16" mounting bolt.