This tool helps when opening caps clogged with paint. This opener set is for opening the caps on paint made by GSI Creos. The flat shaped wrench has a socket for ?Mr. Color GX use? and ?Water based hobby color use? on either end, and one for ?Mr. Color use? is molded into the rear side. There is a dedicated non-slip grip to hold the bottle more easily while using the wrench to turn the cap.