E3D Revo Replacement Springs

These retention springs clip onto your Revo HeaterCore on one side, before connecting to any Revo-compatible cold side on the other – including the Revo Micro, Revo Six, and Revo Hemera. The spring keeps the HeaterCore firmly attached to the cold side, while pushing it into the nozzle for improved thermal conductivity.

This is a 3 pack of springs