Compact and stackable for more workbench room Thin grip irons for comfort and control Lock screw (936 Model) or keycard (937 Model) prevents temperature setting changes ESD safe Economical choice for general use soldering. Both regular and ESD versions include 907 pencil-style handpiece and workstand. Specifications 60W Temperature range: 392 - 896°F (200 - 480°C) Temperature Stability: ±1.8°F (1.0°C) (Japan) Analog version of 937 station. Temperature setting is controlled by lock screw. (936-12)