This budget range disc brake is excellent value for money. Please make sure it is compatible with your bike before buying. I have a Montra Madrock v.2017 and it fits perfectly on it. I have replaced the stock, cheap, local brakes with a pair of these, front and rear and the feedback is excellent! The model sold is of Tektro Aries. You can look up the specs on their official website before buying. Each set contains 1 caliper, 2 mounts, 1 for front and 1 for rear, compatible with upto 200mm rotor size, 1 rotor, 1 brake cable housing and 1 brake cable along with the required numbe rof nuts, bolts and washers. One of the best and cheapest if you want to opt for mechanical ones.