Dura Ace 7710 series track racing chainring from Shimano. This model bears the legendary 'Dura Ace' name, and for good reason.
Quality is second to none, it is strong, light and is made of anodised aluminium which is durable and looks great. As a track chainring it is intended for use with a fixed gear and cannot be combined. 
This chainring has a 144mm bolt circle size and for use with standard 1/2" x 1/8" chains.
It can be used with 144 BCD crank sets such as the Dura Ace series, Sugino 75 and Grand Mighty, Suntour Superbe, and more.
Made In Japan.

Specifications

Material: Aluminium
Bolt Circle (mm): 144mm

45T