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.
E3D Clone Volcano V2 Brass Heater Block