1.Low cost so the price is more competitive 2.Long life,no noise,comfortable and sensitive 3.Dynamic balance inspection 1: 1:material: cast iron and then machine it2: lubricate&sealed&to install&durable3: weight:11.9kg4:application: MERCEDES-BENZ 5: hardness:180-240HBS , is strictly controled and tested6: long life , no noise , comfortable and sensitive to brake , compliance with international ...