DYU Cut Off Power Brake Lever D3+/D3F/D2F Quality material: the brake housing set is made of alloy and plastic, strong and durable enough for long time use, with resistance to cold, heat, and oxidation, not easy to deform, ensuring the brake sensitivity, suitable for most kinds of weather conditions of riding Easy to install: the bike brake lever set is simple to mount on the bikes, and you will find it easy to quickly replace the old bike brake, making the riding process more smooth and comfortable, improving your safety with a good reaction speed Practical functions: the bicycle brake rod is durable and has a little burden on your bicycle, ensuring a smooth ride and the brake set is simple and portable, great for carry-on items. Brake arm tension is adjustable, the frame/forks are in the correct position, easy to adjust the spring in the internal brake bow tension.