Feature:1. Tubing Parameters: Front tubing is 800mm/31.5in long, and the rear tubing is 1450mm/57.1in long.2. Usage Scenes: Whether you are climbing, off road, jungle, leisure driving, you can easily control it.3. Applicable Model: Brake handle mounting telescopic adjustable diameter, tightening screw, 25mm suitable for most models on the market.4. Brake Pads: Made of resin metal composite materials, the is and flat, will not damage the brake disc, and there is no noise during braking.5. Four Piston Mountain Bike Disc Brake: Bilateral hydraulic disc brake, compared with the same level of double piston brake, the braking force is increased by 20%, and the resistance wear is increased by 150%.Specification:Item Type: Mountain Bike Hydraulic Disc BrakeMaterial: Aluminum AlloyWeight: Approx.779g/27.5ozBraking Direction: Left Front, Right RearTubing: Front Tubing Length: Approx. 800mm/31.5in, Rear Tubing Length: Approx. 1450mm/57.1inFront Brake F160/R140, "F160/R140" F Stands for the Front, R Stands for the Rear, and 160 and 140 Refer to the Disc Diameter (mm).Rear Brake F180/R160, "F180/R160" F Stands for the Front, R Stands for the Rear, 180 and 160 Refer to the Disc Diameter (mm). Package List:1 x Front Brake1 x Rear Brake8 x Screw2 x Olive Head2 x Oil Needle2 x Mounting ColumnNote:Brake handle mounting telescopic adjustable diameter, tightening screw, 25mm suitable for most models on the market.