This handy wrench is designed to remove and install fire extinguisher gauges during routine maintenance. The slim design fits easily where ordinary wrenches may not is thick enough that it is not remotely flimsy. Weight: 5.3 ounces (0.15 kg). Length: 6-13/16" (17.3 cm), width: 1.25" (3.2 cm), depth: 1/8" (0.32 cm). Wrench opening is 1/2" (1.27 cm).
Tech note: Depressurize extinguisher before using, obviously.