Hakko FX601-02 Soldering Iron with B3730 Tip Enclosure & T18-D16 Tip Easily convert to electronic board repair with included B3730 Sleeve and a T18-D16 Tip Adjustable "electronic" closed-loop temperature control Dial the temperature you want Temperature control sensor in heater ensures consistent heat Slender ergonomic handpiece & durable construction with cord strain relief