Features: Experience precise control with the M650 & M750 series mouse wheel, featuring precise scrolling mechanics and quiet operation for seamlessly document navigation and reduced workplace noise. Engineered with durability composite materials (plastic reinforced ), these scroll wheel offer textured surfaces for enhances grip in daily computrer tasks. Ideal for office professionals, programmers, and home users who require reliable scrolling functionality during extended work or intensive data processing activity. Optimized spreadsheet management, code editing, or academic research in noise sensitive environment like shared offices or libraries with these responsive mouse wheel replacements. For multiple mouse models, this scroll wheel upgrades combines tactile feedback with quiet scrolling technology to minimize finger fatigue during long time browsing Specifications: for m650 m650l m750 m750l, lift mouse Material: High-strength plastic + silicone + metal Suitable for M650, M650l, M750, M750l model lift mouse Size: Standard roller size, ergonomic Sales attributes: black, gray and white Package Includes: 1PC mouse wheel note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution