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Explosion-proof adjustable wrenches are special, non-sparking hand tools designed for use in flammable and explosive environments. They are available in aluminum bronze and beryllium bronze. Available in sizes of 100, 150, 200, 250, 300, 375, 450, and 600 mm, they accommodate nuts and bolts of varying sizes. They are primarily used in environments where flammable gases or dust are present, such as oil production, natural gas pipelines, chemical plants, coal mines, and pharmaceutical workshops.