Constructed of 1045 series high carbon steel with an exclusive heat treatment process for added strength and wear resistance. The zinc plating and baked on paint process helps achieve a great, long lasting appearance. The strongest and longest lasting standard steel rear sprocket available, also trusted by Japanese OEMs since 1946. Model # 2-313545 Features: Uses high carbon, 1045 steel material Exclusive heat treatment process for added wear and strength Zinc plating and baked on paint process for long lasting appearance Strongest and longest lasting standard steel rear sprocket available.
