Bynccea chainrings only suit for single speed chainring, doesn't fit double/triple speeds chainrings,7/8/9/10/11/12/speed chains (for Shimano/SRAM/FSA 104 BCD crank).
Narrow-wide tooth design increases bicycle chain retention, effectively protects the frame from scratches, extends wear life, and reduces friction and noise.
Material: High quality aluminum alloy,Anodized surface bright color,corrosion resistance.
Weight: 32T/45g,34T/50g,36T/60g,38T/65g.Package Include: 1 x 104BCD narrow wide chainring;4 x single chainring bolts.
Suitable for Shimano and Sram 104mm BCD cranksets,please confirm that your crank BCD specification is correct before purchase.