Salable chainwheel and crank Pass ISO9001:2000 & CCC OEM services provided ... /38/40/42/46/48/52,as customer require5.Crank L: 89mm ,102mm,127mm,152mm,165mm,170mm,175mm6. ... and accessories. Our company has produced the bicycle parts for 15 years. We are located in Gaosanzhou Industrial ... countries and regions worldwide with a high reputation for high quality Bike one piece chainwheel and crank,CP