Features: Accurately measure bike chain wear with this full of durability, portable aluminum alloy checker to preventing riding malfunctions and get optimal efficiency for cycling enthusiasts. Featuring general compatibility with mountain, road, and commutes bikes, this tool simplifies chain maintenance across multiple bike types with wear indicators read easily. Ideal for frequent riders, long distance cyclists, and outdoor adventurers who prioritize proactive bike care and need chain monitoring during extended trips. Use this compact gauge during trail rides, daily commutes, or pre ride inspections to quickly assess chain health and avoid sudden breakdowns in any weather condition. Engineered with aluminum, it withstands harsh environments while delivering precise measurements through clear markings for effortless bike maintenance. Specifications: Component: Aluminum alloy Size: Approx. 29x136mm/1.14x5.35inches Technical parameters: Accurately measure the wear degree of chain, help users replace chains in time, and extend the service life of the bike. Use scenario: Suitable for daily cycling maintenance, professional bike repair shops and outdoor cycling enthusiasts, convenient and quickly chain inspection. Package Includes: 1× Bike Chain Measuring Tool note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!