Features: brand new and high quality 4 colors options for you to choose. Suitable for mountain bicycles, motorbikes. Braking method: hydraulic piston two-way braking. Made of metal, durable and anti rust, has long service for time. The block of the HB-100 is equipped with built-in brake oil, and then the brake clamp is used to control the brake of the hydraulic clamp. The cylinder of the clamp is built-in brake oil. It is a common oil disc clamp that is common in the market. Specifications: Material: Metal Color: Red/Black/Blue/Multi-colors Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Disc Brake Calipers