From 1up Racing:
The perfect compliment for your 1up Racing UltraLite 30mm High-Speed Aluminum Fan, our Brass Chassis Mount allows you to easily mount your fan to nearly any car and keeps the weight as low as possible for improved center of gravity helping to increase stability and improve corner speed on any surface!
A channel runs under the fan to keep your wiring neat and again, as low as possible. Simply use servo tape to mount this to your chassis and use the two included button head screws to mount the fan. Rather than rigid mounts that screw to the chassis, the use of servo tape helps dampen vibrations improving the life of the fan as well.
Weight w/ Hardware: 8.6g