The Hycline Disc Brake Calipers, also known as the Zoom Hydraulic Disc Brake Calipers: HB-100, are a perfect upgrade for your mountain, road, folding bikes, E-bikes, and electric scooters. With its cable-actuated hydraulic disc brake system, you can enjoy smooth and reliable braking even in the wettest conditions or on the steepest downhills. The HB-100 features a new hydraulic line pull clamp technology, allowing for precise control of the hydraulic clamp. The elastic fine adjustment screw enables you to fine-tune the inner brake line, providing an ideal brake feel. With its premium aluminum construction and oil cylinder-driven two-way brake pad movement, the Hycline Disc Brake Calipers deliver exceptional performance and durability.