The Weller RTM 025 K (T0050101199) RT Micro Active Soldering Tip, Knife, 2.5mm, for WXMP Iron, is a versatile performance active tip for micro and standard components, suitable for the widest range of applications. The tip features a built-in sensor and perfect heat transfer, for the fastest heat-up and recovery time. The tip enables users to reduce downtime for a faster workflow and better results.