Product information "B-Stock - Hub Red, with Mounted Bearings, Reinforced Wheel Sleeve - for Simson S50, S51, S70, KR51 Swallow, SR4, Duo4"
B-Stock - Wheel Hub with Mounted Bearings - Bearing Marks - Paint Damage Present - for Front and Rear Wheel - with Sealed Wheel Bearings and Reinforced Spacer Sleeve - with Cooling Fins, for Original Look - Color: Red, RAL 3001 Signal Red - made of very fine Aluminum - solid Gray Cast Iron Brake Ring - Note: The reinforced Spacer Sleeve prevents the Bearings from being Tensioned.