- HIGH-QUALITY MATERIAL: Crafted from premium aluminum alloy, this brake lever is built to last. It resists cracking, breaking, and rusting, ensuring optimal performance and extended longevity. - OPTICAL GEAR DISPLAY INDICATOR: The integrated optical gear display allows you to easily check your gear position at a glance. Clearly marked for 3-speed, 7-speed, left, and right, you can quickly distinguish your settings. - MULTIFUNCTIONAL USAGE: This gear shifter offers versatile functionality. Use the left shifter for 3-speed, the right for 7-speed, or both together for a 3x7 speed setup. Its integrated design allows for seamless switching between functions. - WIDE APPLICATION: Ideal for a variety of bikes, including MTB mountain bikes, road bikes, variable speed bicycles, folding bikes, and city bikes. This component enhances your riding experience across different terrains. - ERGONOMIC DESIGN: The design is focused on providing a comfortable grip, improving your control while riding. This feature is essential for maintaining safety and efficiency during your rides. - EASY INSTALLATION: The gear shifter is designed for straightforward installation, making it a practical upgrade for your bike without the need for extensive tools or experience. Enhance your cycling experience with this high-quality gear shifter that combines durability, precision, and versatility for all your biking needs.