Rv Water heater Wrench

I was looking for a way to always have the correct size socket to drain my RV water heater, so I made this. Printed with 0.6 nozzle but can be printed with 0.4. The size is 15/16". Printed in both PLA and PetG, both have worked. Printed with .6 and .4 nozzles, both work. If using petg do yourself a favor and use pla for supports, much easier to remove. 

Please check your trailer for the appropriate size. It seems that some of the newer trailers have a 27-28mm plug rather than the 15/16".