The Shimano 105 ST - R7120 - L left 2x dual - control shift/brake lever in black is a great choice for cyclists. It has a revised lever position and bracket shape, designed using data from a wide study of different hand shapes. This lever provides quick and intuitive shifting, just as cyclists expect from Shimano 105. The updated ergonomics of the mechanical 2x dual - control left lever offer light shifting operation, so you can focus on the road. The blade shape shortens the lever access curve, making it comfortable for riders with various hand sizes and shapes. The reach adjust feature allows you to customize the fit. Also, it has enhanced leverage for better braking and shifting control with less effort. Tech specs include hydraulic brake lever actuation, double drivetrain, black color, left - side use, no included brake, adjustable reach, 12 drivetrain speeds, and compatibility with Shimano Road front derailleurs/shifters.
Using this Shimano 105 ST - R7120 - L shift/brake lever is easy. Just grip the lever with your hand and use your fingers to operate it for shifting gears or applying brakes. When you want to shift, a gentle push or pull on the lever will change the gears smoothly. For braking, squeeze the lever firmly. One important thing to note is that since it's a mechanical lever, make sure to check the cable tension regularly. If the shifting or braking feels off, you may need to adjust the cable. To maintain it, keep it clean. After a long ride or if it gets dirty, use a mild cleaner and a soft cloth to wipe it down. Avoid using harsh chemicals as they can damage the finish. Also, lubricate the moving parts occasionally to ensure smooth operation. And don't forget to adjust the reach according to your hand size for the most comfortable riding experience.
