... , chromium Blast sanding, electrophoresis 45#, Heat Treatment Motorcycle Roller Chain Sprocket Kit1 SPROCKET MARKMaterial: 1045 1023Heat treatmentSurface: zinc, nickel, chromium, Blast ... us==============================================================COMPANY DATAWEIFANG HENGXIN NAITE CHAIN CO., LTDTEL: 86+0536+3505910MOBILE: 86+18953691755 45#, Heat Treatment Motorcycle Roller Chain Sprocket Kit