Feature●? Replacement - 532009040, 9040H, 532124959, 9040HR etc.●? Material - Manufactured by chrome steel sturdy and durable.●? Seal - Keeps grease in, prevents impurities from entering and extends bearing life.●? Performance - Precise size, smooth and low noise operation, multi-functional use in multiple scenes.●? Warranty - Three months warranty, free refund if there is any quality problem during the warranty period.Description