Drag chain bed heat bed attachment.
thingiverse
This is a bed attachment that made for heat beds that use a plug such as the one in the picture. I have this on my Tevo Tarantula with a Hictop heat bed. This was made to work with https://www.thingiverse.com/thing:2396718/#comments I initially flipped the motor to the left side then had to move it back after my new bed.
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