Shimano  FC - 6600 Ultegra - 10 speed  chainset  ST / Road  .

Silver  anodised  alloy cranks / Chainring PCD - 130 mm..

Crank length - 170 mm

C / ring sizes - 39 . 53

Formed Part of 2007 Series Ultegra 6600 / 10 Speed Groupset  /  Requires Hollowtech 2 Cupset ( NOT Supplied )..