Double chainrings crankset for compact of ROAD_RSC3-217XR

● Crank arm alloy forged.BCD:110, Length: 165, 170, 172.5, 175.
   Finish: two tone black or silver anodized.

● Chain rings: 52/36, 50/36, 50/34, 48/36, 48/34, 46/34…and others by order,
   alloy 7075 CNC machine, Black or silver anodized.

● Chainring bolt & nut: cr-mo steel.

● Compatible B.B: square/ ISIS.(Option:Octalink splined).

● Chainline: 43.5mm