product specification Non Sparking Adjustable wrench 150mm Non Sparking Adjustable wrench 200mm 1 Non Sparking Adjustable wrench 250mm Non Sparking Adjustable wrench 300mm Non Sparking Adjustable wrench 375mm safety tools are manufactured from Beryllium Copper or Aluminium Bronze, and are used in potentially combustible and explosive atmospheres such as oil, gas, petrochemical, powder, chemical manufacture, distillery, paint manufacture, gas conduit manufacture, leather processing, electric power, military affairs, pharmaceutical industry, ship industry, tanker, aviation and space industry and the other environment where sparks are the potential fire or explosion.