The Box Three BMX Disc Brake Caliper is here! With a post-style mounting interface made of carbon steel, this disc brake caliper is all you need to improve control. Weighing only 130 grams, this lightweight gadget will spring you smoothly through every turn. All you need to do is focus on the finish line. FEATURES - Post mounting interface. - BMX brake lever compatible. - Mechanically (cable) actuated. COMPATIBILITY - Compatible will all size rotors - Compatible replacement pads are BB5 SPECIFICATIONS - Material: Carbon Steel - Weight: 130g