Rear Sprocket Steel 38t 525 KawFeatures: 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 38t 525 Kaw Features: Manufactured using only the highest quality 1045 high carbon steel and most are heat treated for added