[Durable material] This bicycle brake pad is made of alloy and plastic, sturdy and durable, and can be used for a long time to meet your needs. [Product size] The bicycle brake bow size is 110 mm (4.3 inches), the brake pads are 55 mm (2.1 inches), and the barrel-shaped end brake cable length is 2 m. [Installation method] Align the brake fixing holes with the body fixing holes; pass the brake wire through the brake wire tube in turn to fix the position of the metal wire tube; fix the brake wire on the bolt, then install the brake pads, and adjust the distance of the brake wire , Position and length, and then fix the brake cable firmly.[Wide application] This bicycle brake kit is suitable for most bicycles, road bicycles, mountain bikes, and BMXs. [Included in the package] 2 pairs of mountain bike brakes, the brake pads are suitable for most bicycles, road bikes, etc.; 2 cylindrical end brake cables (2 m long), 6 end ferrules and 1 hex tool. Product Specipication Specification: Material: Alloy and plastic Color: black and silver Size: Bicycle brake: 110 mm/4.3 inches Brake pads: 55 mm/2.1 inches Bucket brake cable: 2 m/78.7 inches long Wide range of uses: This bicycle brake kit is suitable for most bicycles, road bicycles, MTB, BMX, etc. Installation steps: 1. Tighten the brake fixing holes corresponding to the body fixing holes. 2. Pass the brake wire through the brake wire tube in turn to fix the position of the metal wire tube. 3. Fix the brake cable on the bolt, then install the brake pads, adjust the distance, position and length of the brake cable, and then fix the brake cable firmly. Reminder: You need to confirm whether your car has mounting holes for this type of brake on the rear wheel, please purchase with caution. Package includes: 2 pairs of bicycle brakes (2 pairs of brake pads) 2 x mountain bike brake cable 4 x end ferrule 1 x Hex Tool