The new SRAM RED ErgoDynamic Shifters represent their most advanced thinking yet on perfecting the interface between rider and bike.SRAM has scrutinized everything, including the transition between handlebar and hoods, the grip texture, finger wrap, and the separate interfaces with both the shifter and brake lever. The result is an extremely comfortable, highly individual fit that makes the shifters feel like a natural extension of the rider.10-Speed Rear,ErgoFit textured body improves grip and finger wrap with reduced diameter, giving better control, and a better transition to the bar,Individual Reach Adjust of brake and shift lever, now easier to access and uses a standard hex key, puts the controls exactly where you want them,Larger carbon ErgoBlade lever improves shifting from the drops,DoubleTap technology delivers both shifts from the single lever,ZeroLoss shifting, shifts engage immediately,New clamp allows better fit and adjust for modern carbon and ergo bars.