Finish - Zinc Plated. Material - 4.9 Grade steel. TECHNICAL INFORMATION. 4mm 40mm 7.5mm 2.2mm 0.7. 4mm 25mm 7.5mm 2.2mm 0.7. 6mm 30mm 11mm 3mm 1. 6mm 50mm 11mm 3mm 1. 6mm 40mm 11mm 3mm 1.
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