@rf4tools: ✨ 210T replaceable nozzle heating core: ✅ Plug and replace the head, it can be done in one second ⚡ ✅ Pure copper core, fast heating and rapid temperature recovery 🔥 ✅ Anti falling locating pin, as stable as Mount Tai 💪 #RF4 #RF4tools #soldering #210T #Tinwire #Desoldering #Wires #solder