Established by Tune in 1999 and then purchased by Saris PowerTap has become the leader in wattage indicators for bicycles. Currently used by all the top road, triathlon, mountain bike and cyclocross professinals. This amazing tool allows everyone to get the most out of their workout. The PowerTap system in conjunction with a good coach could knock 40% off your work out time with the same results.PWB proudly builds custom wheels using Edge Composites,Zipp,Reynolds and our own PWB carbon rims. The 2010 PowerTap line up includes the following: POWER TAP ELITE+ (NEW Wireless ANT sport + NO carbon, steel axle and steel driver body) POWER TAP PRO+ (NEW Wireless ANT sport Alloy Axle and Driver body + NO carbon) POWER TAP SL+ (NEW Wireless ANT sport + NEW oversized Alloy axle and Driver body) POWER TAP SLC+ (NEW Wireless ANT sport + NEW Ceramic Bearrings, NEW oversized Alloy axle and Driver body) POWER TAP TRACK+ (NEW Wireless ANT sport + NEW oversized Alloy axle and White Industries splined alloy driver ) POWER TAP MTB DISC SL+ (NEW Wireless ANT sport + NEW oversized Alloy axle and Driver body)