To make our Dura Ace 7800 compatible Hudz we have added nearly a centimeter to the overall height of the hood while creating a flatter transition from the tops of the handlebar and a more gradual rise to the tip of the lever. On the underside you see our signature finger contours. Our Original Enhancement Brake Hoods started it all. The goal was simple to mimic the firmness and texture of popular OE hoods while creating a more ergonomic shape. And since we were making these new hoods, we figured that offering them in a range of colors would be a good idea as well. SoftGrip the name pretty much says it all these are 25% softer and provide 80% more grip than our Original Enhancement Brake Hoods. They can serve as a way to help tame the pounding of rough roads or as the ultimate enhancement for a cyclocross bike. LeverSystem Compatibility: For use with 10 speed Shimano Dura Ace systems in the 7800 series including 7800, 7801 and 7803 STI levers. Not compatible with 8 or 9 speed Dura Ace. OE Replacement Part Number: Y 6JA 98100.