... .Good wear resistance 3.Good quality sprocket 4.Reasonable price 5.Sprocket manufacturer direct sale Komatsu sprocket rim1.High precision tooth profile to ... price by the centralized mass production system4..MODEL NUMBER(chain sprocket)KOMATSUPC20,PC30,PC60-1/5/6/7,PC75UU,PC90,PC100 ... ,DH400,DH4505.Product 6.Certification Hitachi,Caterpillar,Komatsu,Kato,Sumitomo sprocket rim manufacturer