Home Products Bicycle parts Transmission Parts Bicycle Cranks One Piece Bicycle Crankset Bicycle Crankset Model : OPC-921 Q'ty : Add To Inquiry Specifications Bicycle Chain wheels OPC-921 One Piece Crank (Round Head Both Side). Length: 170, 175mm. Related Products Bicycle CranksetModel : OP-L06 / L07 Add To Inquiry Bicycle CranksetModel : OP-L01 / L02 / L03 Add To Inquiry Bicycle CranksetModel : OPC-927 Add To Inquiry Bicycle CranksetModel : OP-7001 Add To Inquiry Bicycle CranksetModel : OPC-902 Add To Inquiry Bicycle CranksetModel : OPC-925 Add To Inquiry