From a store buy-out. Looks to be factory sealed and in new condition.

High Performance Resistance Soldering Unit at an Affordable Price

Heating is instantaneous and confined to the solder connection
Makes a more professional joint than traditional soldering
A Micro-Mark Exclusive
Footswitch on/off activation for free hand to operate safely
Soldering electrodes last 2 to 3 times longer than traditional soldering iron tips


Easy-to-use resistance soldering unit generates heat only at the joint, so that already-soldered parts won't fall off while adding new ones. How it works: With the ground clip connected, place the carbon electrode on the tip of the handpiece in contact with the part to be soldered and step on the foot switch. The transformer passes a safe, low-voltage electrical current through the part, which heats it to soldering temperature within seconds. Apply the solder, then release the foot switch to instantly cool for a strong, durable joint. Includes 63 watt* transformer with dual power outputs for heavy- and light-weight parts (plugs into standard 110/120V household outlet), handpiece, 6 carbon electrodes, ground lead, on-off foot switch, and instructions.

*Since a resistance soldering unit concentrates heat at the joint, it will heat larger work than will a conventional soldering iron of the same power.