Exerpt from Vuelta's Website-<br /><br />Formula for Speed<br />High spoke count with aero rim and precision bearings equals velocity.<br />The ultimate track wheels. Purpose built for the velodrome or Keirin circuit.<br />Each wheelset is stress relieved by the hands of skilled craftsmen not less than three times. Trued and tensioned each time to strict specifications.<br /><li>Rim: 1186P 30mm deep section(700c)MSW </li><li>Bead: clincher </li><li>Hub: Vuelta Track double fix rear - sealed bearing </li><li>Bearing: 2x2 precision bearing </li><li>Drilling: 32f/36r </li><li>Pattern: radial (f) / 3 cross (r) </li><li>Spoke Gauge: 1.8 bladed </li><li>Spoke Profile: Black Aero-bladed </li><li>Nipple: brass </li><li>Quick Release: n/a bolt-on </li><li>Spacing: 120mm rear / 100mm front </li><li>Color: black </li><li>Cogs: (2)15tx1/8" included w/lockrings </li><li>Weight: 1065g (f) / 1280g (rear WITH cogs and lockrings) List: $249 USD</li>