Stand for Stanley Razor Tool.

thingiverse

The iconic Stanley brand is synonymous with top-notch tools that get the job done with ease and precision. And at its core, that's exactly what "Simple" stands for - a no-nonsense approach to getting the task accomplished quickly and efficiently. Whether you're tackling a DIY project or working on a major construction site, Simple is more than just a tool, it's a symbol of reliability and ruggedness that Stanley has built its reputation on over the years.