Product Description Features HIGH QUALITY MATERIAL The brake housing set is made of alloy and plastic, strong and durable enough for longterm use, resistant to cold, heat and oidation, not easy to deform, ensures sensitive braking, suitable for most weather conditions. Riding Skills Practical Features bicycle brake levers are durable, less burden on the bike to ensure a smooth ride, the brake set is simple and portable, perfect for carrying around Suitable for most mountain bikes and road bikes with brakes The brake arm tension is adjustable, the frameforks are in the right position, and it is easy to regulate the tension of the internal brake arch spring. Product Information Product Name Bicycle Brake System Product Material Plastic Alloy Packing List available when purchasing a product Brake System Kit 1 Black Please understand 1. Due to the long transportation time, the goods may be damaged during transportation, if the goods are damaged, please leave a message to us through the official website immediately before posting a comment, I will solve the problem for you. 2. Due to manual measurement, the size may have 13 cm error. 3. The color may vary depending on the monitor.