Brand: NIKAVI Brakes Semi-Metallic compound suitable for all weather conditions Please check the picture before you buy & compare with your old model. Material: The nikavi brake caliper assembly is made from premium quality cast iron and aluminum alloy material, which is durable and high temperature resistant. It is not easily damaged, has a qualified quality and long service life. Pressure tested to ensure safe and confident braking. Pre-lubrication of critical areas prevents binding.