Features: Experience precise Key Switches Testers, ultimatedly tool for mechanical keyboard enthusiasts to find their switches feel. This set offering a comprehensive of switches testing, ensuring you make an informed for your typing comfort. Certain models feature LED lighting effects that illuminate when pressed, enhancing visual appeal and adding to the enjoyment of play. For gamers, programmers, and writers who demand consistent keystroke performances and are on the quests to customize their mechanical keyboards. Our mechanical keyboards Switches Tester with optimize their keystrokes for efficiency and comfort. Specifications: Component: ABS Types: 4-key with Backlight/ 4-key Without backlight / 9-key Tester Color：Clear/Black Size: about 4-Key 6.2x6.2x2.7cm / 9-Key 7.4x2.1x2.7cm Package Includes: 1Set Switches Tester note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.