1. High-intensity hydraulic disc brake caliper set for road bicycles. It has a dual-piston brake type, providing smooth braking and relatively strong braking force. 2. It is relatively easy to install, with good braking performance and relatively high heat dissipation performance. 3. It has a comfortable and smooth touch, is suitable for 22.2 mm handlebars, and adopts a three-dimensional cylinder design. 4. Front hydraulic brake caliper (tube length: 800 mm), rear hydraulic brake caliper (tube length: 1400 mm), [Strut A and Strut B are universal] Strut A: 75 mm, Strut B: 51 mm. 5. Specifications: - Material: Aluminum alloy - Colors: Black, Silver 6. Contents of the set: You can choose as needed - 1 pair of hydraulic disc brake set - 1 pair of hydraulic disc brake set + 1 pair of brake discs - 1 front hydraulic disc brake - 1 rear hydraulic disc brake - 1 front hydraulic disc brake + 1 brake disc - 1 rear hydraulic disc brake + 1 brake disc