Crank arm length: 170mm, 172.5mm, 175mmTeeth: 36/26T Crank material: AL-6061-T6Crank coating: HBKCompatibility: 11/12SWeight: 840g 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.