Driven Products 520 Steel Rear Sprocket - 48T , Color: Natural, Material: Steel, Sprocket Position: Rear, Sprocket Teeth: 48, Sprocket Size: 520 5030-520-48T One of the lightest 520 steel sprockets available today Designed using our proprietary EST Technology Performance and longevity all in one sprocket Attractive black zinc semi-gloss finish Lowered surface to remove unnecessary weight