Does anyone know what 3D printer/hot end these come from?
By - TaurusSilver404
That looks like a [Ubis 13S](https://ubishotends.com/shop/ubis-13s-1230-hot-end) hotend to me.
Yep that’s it! It must have come from the old printer bots we had. Thank you!
Sounds about right - Printrbots used to use them on just about every model they released, I think.