Intuitive and reliable: the bicycle chain tester allows you to check your bicycle chain for wear quickly and without any doubts. High-quality steel makes your chain gauge durable and always reliably visible. Additionally, laser printing helps you measure the wear of integrated chains. MULTI-FUNCTION TOOL: This tool provides a quick check of chain stretch and wear to determine chain quality. Easy to carry: The bicycle chain gauge is small and light, you can take it anywhere. If your bike chain breaks while riding, you can easily fix these problems. Of course, chain testers are also great for daily condition checks on your bike. Wide range of uses: Suitable for station wagons, road bikes, city bikes, mountain bikes, etc. Keep your bike working and provide more convenience for most people. Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand