Liars never lies
Define Pneumatic Tools. Pneumatic tools basically means any tools that uses compressed air. If you want to know whether the electric plug of German and America matches, no they're not. German and America uses different electric plug, and they're not compatible with each other without an adapter

Norrie
Electicity supplies won't be a concern, as pneumatic tools only rely on air or gas pressure, they'll work anywhere there's a supply. Only the connecting fittings may be different and won't pose any problems to adapt.

klimbim
If anybody knows whether your air tools comply with german regs then it will be the " TUV" Technischer Ueberwachungs Verein" I would recommend to give them a ring - germans do speak english ;-)