This is an extension arm for a digital/USB microscope, helps when reworking/soldering larger PCBs.

This fits my TOMLOV microscope ([https://www.amazon.com/gp/product/B08G4Y6C65/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1](https://www.amazon.com/gp/product/B08G4Y6C65/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)) but should fit similar scopes. Please check the the dimensions of your scope and stand against the picture, to make sure everything will fit.

There is also a hole for a M3 heated insert for a M3 bolt to hold the scope in place.