This is a Diamond Hotend adaptor for the Hypercube Evolution.
The actual hotend is the original remix with an extra attach point but I remixed the mount to be able to receive it.
There was someone else on thingiverse who remixed the same thing but stuck together. It was near impossible to print properly, so I decided to remix them separately which makes it a lot easier to print.
2xM3 screws, preferably socket.