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 )..