Chainwheel & crank
1>.Thickness of Chainwheel: 2.0mm,2.3mm,2.5mm,2.7mm
2>.Teeth of Chainwheel: 28T,32T,33T,34T,40T etc.
3>.Surface of Chainwheel & Crank: CP, Black, colorful
4>.Crank have crooked and straight
High quality, Fine workmanship, Reasonable, Best service