Durable Portable Solder Sucker Desoldering Pump Removal Tool This fast action, heavy duty desoldering pump will help you complete the task quickly and safely Design to remove the solder from the circuit boards and more Simply depress the plunger, place the tip of the nozzle against the solder you wish to remove When the solder melts, push the release button and a retracting plunger creates a strong vacuum at the tip, removing the melted solder