Description: Teeth: 24/26/32/38/42T Speed: 3x10S、2X10S Material: Steel(24/26/32/42T),Steel+Nylon(38T),Aluminum(42T) BCD: 104mm(32/38/42T),64mm(24/26T) Feature(only include 32/38/42T):special teeth profiles design is lead to the chain leave the chainring easier when variable speed happened.Secondly,because of the concave and convex design,the chain has an excessive place ,so the riding speed can be smoother.
