Chris King - RingDrive 2.0 Lube is a Nano-Particle lubricant engineered by Chris King to further reduce resistance and wear in your Chris King rear hub. In addition to lower resistance and a longer wear life, RingDrive™ Lube 2.0 improves performance in cold weather conditions.   To install, simply remove old lubricant and contaminants from your RingDrive™, Drive, and Driven Rings and apply 1-2ml of RingDrive™ Lube 2.0. Only a 2.5mm hex key is required to perform the service.  Chris King RingDrive 2.0 Lube Features Nano-Particle lubricant Reduced resistance Increased wear life Improved cold weather performance