The inspection wedge is a wedge with a light. It's a multi purpose tool. You can use it with a flashlight inserted to see inside panels. as a knockdown holder during repairs, a pry tool for R&I or as a guide for your borescope into panels.
The light is easily replaceable with a few turns of a allen wrench.The light can be found on amazon or any local auto parts store.
Inspection wedges comes with a light pre-installed as a convienance.