Due to the ideal geometry of the tip, the risk of damaging the surfaces around the threaded insert is effectively reduced. Protect the results of your hours of careful printing Suitable for most of frequently used Heat melt nut in 3D printing parts working The split design allows you to easily switches between tips of different sizes without unscrewing the sleeve of the soldering iron. You can easily replace the tip by simply unscrewing the old tip and installing new Our heat set insert tip set ensures seamless and clean embedding of threaded inserts into forming a new, fastenable thread This Tips head for the screw which Inner diameter 2/2.5/3/4/5/6mm, Manufacturer: ZYHARUKO