Special Radiator key

The radiator in the flat I lived in several years ago needed bleeding, but no one had a key for it. Without a key, this radiator made a mess on the wall and floor. So I came up with this design. Nothing fancy, but it leads the water through the key itself, and into whatever you use to catch the water. Should be printed with something strong, but if you only have PLA, make sure the screw is not too tight, or the key might break. I used a needle nose plier to loosen the screw without letting water out, and it worked a treat. Enjoy