DetailsDescriptionMaterial: Aluminum Alloy
Tooth: 16 (T) Or 20 (T)
Pitch: 2 (mm)
Bore : 3 (mm) Or 5 (mm)
Tooth: Smooth Or ToothOutside diameter ：13/16/18mmPackage Included:
1 x Pulley （ Do not include other ）Note:Please allow 0.1- 0.5cm error due to manual measurement. Please make sure you do not mind before you buy.The colors may have different as the difference display, please understand.