Eaton 38/4 is an earthing band clamp for round pipe diameters from 25 to 114 mm, constructed in nickel-plated brass. It accepts a single earth conductor with a cross-section from 25 to 70 mm² and provides a low-resistance bonding connection to metallic pipework. The corrosion-resistant finish suits both indoor and buried installations. Typical use is to earth water pipes, gas pipes, and steel structural members as part of an equipotential bonding system.