Made of High quality Anodic oxidation 7075 T6 aluminium alloy,aerospace grade strength.Stiff 4mm plate thickness to ensure no flexing.
Light Weight:32T:41g.34T/49g,36T/59g,38T/72g.With four chainring bolts.
Narrow Wide tooth design: ensures ultimate chain retention,increases wear life,and reduces friction and noise.
Suitable for most of SHIMANO and SRAM cranksets. Please determine your crank BCD specification carefully before buying.