... ,36,42,44 4.ISO 9001:2000 chainwheel crank We are a big company in China mainly ... manufacturing bike parts.Our products: crank,pedal,saddle,tube,cotter pin,hub,freewheel,chain,steel ... you! Description: 1. Finish: CP and ED2.Teeth crank and weight is to order3.Material: Steel,Aluminum Alloy ... by quality control department before leaving factory high painted and heavy duty chainwheel crank