Rear Sprocket Steel 51t 428 Kaw/SuzFeatures: Manufactured using only the highest quality 1045 high carbon steel and most are heat treated for added strength and wear resistance Computer designed weight reduction holes are included where possible Most are zinc plated and some have a baked on durable paint process for corrosion resistance Rear Sprocket Steel 51t 428 Kaw Suz Features: Manufactured using only the highest quality 1045 high carbon steel and most are heat treated for added