The Shimano SG-3C40 left-hand locknut is a reliable choice for cyclists looking for a quality part for their bike. Manufactured by the renowned Shimano brand, this locknut is designed to ensure optimal operation of your derailleur mechanism. Strength and durability are the main features of this Shimano SG-3C40 left-hand locknut. Made from high-quality materials, it is designed to withstand the tough conditions of bicycle riding. Whether you're an occasional cyclist or a cycling enthusiast, this nut guarantees excellent reliability and long life. Ease of installation is another benefit of this Shimano SG-3C40 locknut. Thanks to its ergonomic design and universal compatibility, it can be easily installed on a wide variety of bikes. Whether you need to replace a worn locknut or upgrade your transmission, this Shimano model is an ideal choice. When using this Shimano SG-3C40 left-hand locknut, you can expect smooth, precise shifting performance. With its high-quality design, it guarantees reliable gear engagement and smooth operation, allowing you to enjoy your bike rides to the full. Whether you're an amateur cyclist or an experienced racer, you can trust the Shimano brand to deliver top-quality products. The Shimano SG-3C40 left-hand locknut is no exception to this reputation. With its strength, durability and ease of installation, it will meet all your bicycle transmission needs.