Sparkless Slogging Ring Spanner - 32mm - DIN 7444 - Made in USA
This is the 32mm size. You can see 32 stamped on it.
Same use:
It is a non-sparking safety spanner made of Aluminum Bronze. It will not produce spark when struck. Used with a hammer to tighten or loosen 32mm nuts and bolts in hazardous areas like oil refineries, tank farms, chemical plants, gas plants where normal steel tools can cause fire or explosion.