CYSKY Narrow Wide Chainring 104BCD 30T Bike Single for 9 10 11 Speed, Perfect Most Bicycle Road Mountain BMX MTB (Black)

Teeth Size: 30T, Chain Size: Standard 1/2" X 1/8", Shaped: Round,Fit for various kinds of bike crank which BCD is 104mm Material: Made of High quality Anodic oxidation 7075 T6 aluminium alloy,aerospace grade strength.Stiff 4mm plate thickness to ensure no flexing. CNC Precision Process: precision machining and anodic oxidation electroplating, keep medals smooth surface, bright color, not faded and corrosion resistance. Narrow Wide tooth: The narrow wide tooth design increasing the contact area with the chain greatly, so that each of the teeth can be fully inserted into the chain, increase the grasp force, make you no longer worried about the chain dorpped, easy to pass through the bumpy road. Compatible Model：Suitable for most of SHIMANO and SRAM cranksets. Please determine your crank BCD specification carefully before buying