Description: Compatibility: Designed for Auto and for Cars master cylinders, ensuring a suitable fit and optimal performance during brake fluid maintenance Material: Constructed from aluminum alloy, which is wear resistance, ensuring long term reliability Dimensions: Features a diameter of 43mm, tailored to meet the exact specifications required for effective brake fluid reservoir repair and refilling tasks Efficient Maintenance Tool: Ideal for both professional mechanics and DIY enthusiasts looking to perform efficient brake fluid leak repairs or refills on their vehicles Easy Installation: Designed for straightforward installation without the need for complex tools or procedures, making it convenient to use in various automotive repair settings Specification: Material:Aluminum Alloy Size Chart: Diameter 43mm Package Includes: 1x Master Cylinder Bleeder Adapter Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.