RadioShack 25-Watt Pencil Soldering Iron Replaceable screw-in 5/32" tip switches out quickly and conveniently. Compact, lightweight design fits easily in a tool box or tool belt. Tip heats to 640F (338C). An ideal iron for integrated circuit work and other static-sensitive electronic projects. UL listed -- UL has tested representative samples of this product and determined that it meets UL's requirements.