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Aluminum Alloy Bolted Strain Clamp Nll Tension Clamp Electric Power Fitting. Made of high-strength heat-treated aluminum alloy, light weight yet great tensile load capacity. Excellent anti-oxidation & corrosion resistance, withstand salt spray and outdoor long-time weather exposure. Good electrical conductivity, no magnetic hysteresis loss, energy-saving performance. Stable strong clamping force to fix overhead conductors securely. Bolt-type structure, easy installation, reusable without special equipment. Smooth contact surface, prevents abrasion to cable/conductors. Wide application for overhead power distribution terminal and angle towers.