2pairs ZTTO Bicycle Metal Sintered Cable Mountain Road Bike Electrical Scooter Disc Brake Linings, Style: 8611. Material: including copper, tin copper, potassium titanate whiskers and other metals 2. Temperature: 1000 degree Celsius high temperature pressing 3. Applicable road conditions: urban road civil, country road competition and mountain cross country environment 4. Use: Effectively reduce the wear on the discs 5. Strong compatibility, suitable for a variety of bicycles 6. Durable material, not easy to corrode and break, can be used for a long time