These Montana Gold nozzles are supposed to work with Montana Gold spray cans, but they also work with Montana Black cans and Liquitex spray paint cans (I've tried this myself). The package comes with a printed illustration of what each nozzle does, so that you get familiarised with each one. Also, the colour coding of the caps and mouth point makes them easy to recognise. The pack is really cheap, especially taking into account that the nozzles work with different brands of spray paint.

