You can put on the huge fasteners with a width of 120mm across flats using hands, and the De Neers - 120 mm, Single Open End Spanner can tighten them shut. The 120 mm, Single Open End Spanner uses a black phosphate layer for an industrial matt finish. The phosphate salts of zinc, iron and manganese form the first layer protecting the core steel in Single Open End Spanner. The Open End Spanner has a long handle that is required to provide the heavy torque for tightening and loosening the huge fasteners. The spanner provides a sturdy grip and an excellent hold on the fasteners while working on it.
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