CRANK LENGTH: 170,172.5,175mmGEAR: 38/28TCRANK MATERIAL: AL-6061-T6CRANK FINISH: HBKINNER CHAINRING: 2mm STEELCHAINRING FINISH: EDOUTER CHAINRING: 3mm Alloy CNC DetailCHAINRING FINISH: HBKOUTSIDE BEARING: 24mmCOMPATIBILITY: 11/12SCHAINLINE: 48mmPCD: 104mmQ-FACTOR: 181mmWEIGHT: 860g We apologize for the inconvenience, but at the moment, we do not offer sales of this product to individual consumers. However, we do have options for B2B sales and would be happy to assist you through our offline business team. You can reach them at [email protected] for further information.