Features: Experience smooth and precise navigation for the new version M185 Mouse Wheel, to enhances your computings tasks effortlessly. from plastic, this replacement mouse wheel for models including M185, M186, B220, and B221, ensuring for device. for mouse users lookings to replace a worn out scroll wheel, this accessory for maintaining performances. Whether you're working in office or navigating through your favorite game home, the M185 Mouse Wheel offer reliability and comfort for everyday use. Upgrades mouse with easy to install wheel and enjoy a refreshed scrolling experience that keeps you in control of your digital world. Specifications: Materials: Plastic Applicable Model: for the new version M185 M186/220/b186/220/221 Mouse Package Includes: 1PC Mouse Wheel note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item. Thank you!