[Irregular Tooth Design]Featuring irregular teeth and concave-convex design to smooth and fast shifts. These chainrings are made from high quality material, ensuring they can handle the abusive ways of the trail. [High Strength & Durability]The drilled and thicker rings provide superior rigidity, and durability. [Compatibility & Easy To Setup]64 mm/104 BCD chainrings to fit all standard cranks. Material: steel colour: black Package Contents: 1 x Bike Chainrings(32T) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.