Features: Made of aluminum alloy and stainless steel, super strong and durable. Hollow frame for excellent heat dissipation. 6 bolt patterns, easy to install. Specifications: Material: Aluminum alloy + Stainless steel Center Distance: 44mm Color: Black / Red (optional) Size: 160mm / 180mm (optional) Weight: Approx. 107g - 155g / 3.8oz - 5.5oz Package List: 1 * Brake Rotor