Description: 【Package Includes】: Each package comes with two washer spacers, concave and convex, providing you with all the necessary components for installation and use. 【Compatibility】: This mountain road bicycle disc brake washer is designed to be fit for M6 screws, making it a versatile addition to your cycling equipment. 【Functionality】: It is used for adjusting the angle of disc brakes to achieve optimal performance, enhancing your biking experience. 【Material】: Made from high quality aluminum alloy, this product ensures durability and longevity while maintaining a lightweight design. 【Dimensions】: With a size of 11.8*6.1MM, this brake clamp concave convex pad fits perfectly without adding any unnecessary bulk to your bike setup. Specification: Material: Aluminum Alloy Size Chart: 1.18cmx0.61cm/0.46inchx0.24inch Package Includes: 2 Bike Brake Screw Washer Spacer(4 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.