Metcal STTC-138P STTC Series Soldering Cartridge for Most Standard Applications， 775°F Maximum Tip Temperature， Chisel 30°， Optimized Geometry for Best Thermal Performance， 1.5mm Tip Size， 6.0mm Tip Length<img src="http://ecx.images-amazon.com/images/I/31vPvi7hxvL.jpg" noproxy>