Weller Soldering Gun Kit D550PK 260 200 Watt Dual Heat Tool (120V 6 Second 1100 F Twin Lights UL Listed Heavy Gauge Cable Metal Solder Repair) 100 149 5X Extended Operational Lifespan: Ultra hardened 5X Extended Operational Lifespan: Ultra hardened bi metal cutting teeth withstand severe mechanical impacts against embedded fasteners without instantaneous tooth stripping Centric Precision Centering Point: Conical guide tip ensures dead on hole accuracy and eliminates bit walking on polished concrete slabs and slick surfaces this 120 volt transformer driven tool allows operators to tailor thermal power directly to heavy copper joints without waiting for pre heat cycles maintaining rigid