NLOFIN keyboard switch tester Compatible with both five-pin and standard three-pin switches, suitable for most mechanical keyboards, enhancing versatility. ^^ NLOFIN switch tester is robust, made of aluminum alloy, resistant to wear and oxidation. ^^ Compact and Portable, Small and elegant, equipped with a lanyard for easy portability. ^^ Safety Design, Features rounded corners to improve safety and convenience when testing switches. ^^ NLOFIN offers three color options to suit various scenarios.