Nozzle replacement tool - hex driver

When I replaced my nozzle I wanted a way of turning the nozzle without burning my fingers and to stop it falling on the floor. I tried a socket but found that it was too deep and I could not use it to screw the new nozzle in. So I tried a nut driver (for a hex drive screwdriver). I found some that were as deep as a socket and others were too shallow as they had magnets inside them.

This worked well but I wanted a simple and wider grip that did not increase the length by much. This led to the simple disk that I designed.