1.Low cost so the price is more competitive 2.Long life,no noise,comfortable and sensitive 3:durable 1: material: cast iron and then machine it2: lubricate&sealed&to install&durable3: weight:4.74kg4:application: Subaru5: hardness:180-240HBS , is strictly controled and tested6: long life , no noise , comfortable and sensitive to brake , compliance with international safety certification ...