E3D Volcano V2 Brass Heater Block. Brass is a great conductor of heat, and these blocks can often hold their heat more reliably than aluminum blocks. This block is compatible with the PT100 Thermistor.
Want to Print over 270C ? Replace your Aluminium Block with one that will not get soft.
Aluminium Melts at only 660C.
Standard Volcano V2 Sock will fit, However it will burn above 280C.