COLD FORGED - All of our Praxis cyclocross double chainrings are created with our proprietary forging process which allows us to manipulate the ring shape and tooth profile more than ever before. With our One-Shot forging we are able to increase the amount of shifting features on a chainring which normal CNC manufacturing won't allow. The process also creates a harder and tougher tooth surface for durability. Individual tooth profiles alternating tooth angles timed ramps and tactically placed shift elevators are all jam packed onto a Praxis ring. Translation: All of these small aggregate features add up to the most durable and consistent shifting rings ever produced for cyclists. LEVATIME - Our LevaTime shifting is the product of years of relentless testing and tweaking. The final result is a set of some of the finest and fastest-shifting rings available. With a LevaTime ring several custom shift pins are placed strategically at points on the ring to provide a perfectly timed lift. Synchronized ramps are tuned with a specific inner ring providing a clean channel for the chain to move upwards. Each individual tooth is sculpted to handle a specific duty. Along with that precisely located scallops help control chain movement and prevent chain suck. Our Cyclocross double chainrings are engineered for the highest performance shifts in the sloppiest of conditions. Portland Boston Seattle Belgium... bring on the rain and mud. Using stainless steel shift elevators and our proprietary LevaTime features these forged Cyclocross Double chainrings excel in harsh riding conditions. Add in our super slippery LiquidAno and these chainrings are as happy as a pig in slop.