New Team Wheels for 2006, the deep section 58mm TMC wheelset sports a sharp-looking, proprietary, aerodynamic dimpled pattern from Zipp. But the technology is more than cosmetic. In every wind, speed, and direction Zipps dimpled wheels are more aerodynamic than our same wheels without dimples. In 90 percent of riding conditions, the innovation will save you between 1 and 4 watts of energy. (On an 8 percent grade,the savings is the equivalent of a static weight reduction of 340 grams!) The aerodynamic benefit mimics the reason golf balls have dimples, aircraft wings and racecars use trip strips and vortex generators, and tennis balls have fuzz. Hub Type: Ultegra 10sp Appx Weight: 796gm Retail Price: $800.00 Team Price: $617.00