Most mechanics and serious carpenters carry both. For a home gamer, if you do automotive work, buy TX20. If you do household electronics, buy T20.
The difference isn’t just aesthetic; it’s pure physics. Here is how the two designs perform under real-world stress. difference between t20 and tx20
The T20 is a member of the Torx family, developed by Camcar Textron in 1967. The "T" stands for Torx (a portmanteau of "Torque" and "X" shape). The number "20" refers to the specific size within the Torx star-drive system. Most mechanics and serious carpenters carry both