Features: Durable and Safe Material: The alignment tool is made of premium-quality 304 stainless steel material, which is known for its durability, strength, and safety. It is designed to withstand regular use and offer reliable performance. Dimensions: The alignment tool features an oval shape that is approximately 55mm long x 20mm wide, as well as an arc shape that is approximately 85mm long x 14mm wide. These dimensions make it compatible with a range of disc brake systems and easy to use. Easy to Use: The alignment tool is straightforward to use. Simply place it on the rotor, above or below the caliper. Slowly rotate the wheel until the calibration tool is located between the brake pads. Once in position, pull the brakes. This will help you diagnose any issues with the brake system, such as misaligned brake pads, pistons that need adjusting, or slightly bent rotors. Useful Tool: Brake pads can often become misaligned due to impacts or regular wear and tear. This can cause issues such as brake pads rubbing or noisy rotors. With a simple alignment tool, you can adjust the position of your disc brake pads and rotor at home, saving time and money on repairs. The tool is a useful accessory for any cyclist looking to maintain their bike's braking system. Customer Service: Customer satisfaction is our first priority, and we provide satisfactory service for ducts. Specification: Material: 304 stainless steel Oval Size: 55*20mm Extended Size: 85*14mm Notes: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor an brightness. 2. Please allow slight manual measurement deviation for the data. Include: 1*Bicycle Disc Brake Pad Adjustment Tool