Elegoo Mini heater and Mars Mate adapter to use both at the same time. Heater is fully constrained and wont wiggle out. Plug is made of TPU and the adapter is made from PLA. The plug covers the hole that the power cable will need to be fed through. This is a drop in replacement, using the same rubber gaskets that come with your Mars Mate and same screws and nuts as well. Nothing additional is needed to purchase with this part.