Mr. Hobby Cap Opener
This tool is specifically designed to assist opening caps clogged with paint. It is for opening caps on paint made by GSI Creos, although it also fits Tamiya 10ml pots.
The wrench has a socket for Mr Hobby Aqueous Hobby Colours at one end, a socket for Mr Color GT paints at the other and another one moulded on the reverse for Mr Color paint. Also included is a non-slip grip to hold the bottle whilst the cap is turned.